Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Neat work!

#7891. If a sum of money is compounded annually at 15% per annum, then find the ratio of amount due in the 7th year to the 8th year.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Neat work!

#7892. A certain sum of money amounts to $31,250 in 5 years at the rate of 25% per annum compounded annually.Find the Principal.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Smart work!

#7893. A certain amount of money trebles itself in 4 years at 12% per annum, compounded annually. If in 12 years it becomes 'y' times of the original principal, then find the value of y.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Excellent!

#7894. Find the amount due to Anderson after 3 years if he deposited $15,000 at the rate of 10% per annum compounded half-yearly.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Excellent!

#7895. Find the interest for the 5th year if $5000 is compounded annually at 20% per annum.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Excellent!

#7896. Find the compound interest on $10,000 for three and a half years at 5% per annum.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Marvelous!

#7897. Find the compound interest on $16,000 for 9 months at 20% per annum, interest being compounded quarterly.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Excellent!

#7898. Find the difference between simple interest and compound interest on $1200 for one year at 10% per annum reckoned half-yearly.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Splendid!

#7899. Steve invested $15,000 at interest of 10% per annum for one year. If the interest is compounded every six months, what amount will Steve get at the end of the year?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

A transposing error, I guess! Good work, though!

#7900. Jane lent a certain amount to Kate that amounted to $28,800 in 2 years and to $33,800 in 4 years. Find the rate of compound interest.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

Brilliant!

#7901. If the difference between the simple and the compound interest earned on a sum of money at the rate of 5% per annum for 2 years compounded annually is $16. Find the principal.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 32,569

Hi,

#7902. The simple interest accrued on an amount of $14,800 at the end of three years is $6,216. What would be the compound interest accrued on the same amount at the same rate of interest in the same period?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

**Online**

**irspow****Member**- Registered: 2005-11-24
- Posts: 863

I am at an age where I have forgotten more than I remember, but I still pretend to know it all.

Offline