Two Drinks

mathland · 2021-04-17 07:08:35

The recommended daily calcium intake for a 20-year-old is 1,000 milligrams (mg). One cup of milk contains 299 mg of calcium and one cup of juice contains 261 mg of calcium. Write an inequalities that represents the possible number of cups of milk m and cups of juice j a 20-year-old could drink in a day to meet or exceed the recommended daily calcium intake from these drinks alone?

Let me see.

299m + 260j >= 1,000

Is this correct?

Mathegocart · 2021-04-17 11:11:29

Hello mathland,
yup, that's all correct - meet or exceed is indeed >=.

mathland · 2021-04-18 06:14:17

Mathegocart wrote:

Hello mathland,
yup, that's all correct - meet or exceed is indeed >=.

How about that? It was a guess, really. It's important to understand the WHY in math.

Mathegocart · 2021-04-19 07:14:24

mathland wrote:

Mathegocart wrote:
Hello mathland,
yup, that's all correct - meet or exceed is indeed >=.
How about that? It was a guess, really. It's important to understand the WHY in math.

I agree. There wasn't much more - you just stated the problem in mathematical form. I.e, 299mg * cups of milk + 261mg * cups of juice (meets or exceeds, i.e greater than or equal to) 1000 mg.
Great stuff.

mathland · 2021-04-19 08:54:03

Mathegocart wrote:

mathland wrote:
Mathegocart wrote:
Hello mathland,
yup, that's all correct - meet or exceed is indeed >=.
How about that? It was a guess, really. It's important to understand the WHY in math.
I agree. There wasn't much more - you just stated the problem in mathematical form. I.e, 299mg * cups of milk + 261mg * cups of juice (meets or exceeds, i.e greater than or equal to) 1000 mg.
Great stuff.

Thanks. Always look for my questions. I absolutely never get enough mathematics.

Math Is Fun Forum

#1 2021-04-17 07:08:35

Two Drinks

#2 2021-04-17 11:11:29

Re: Two Drinks

#3 2021-04-18 06:14:17

Re: Two Drinks

#4 2021-04-19 07:14:24

Re: Two Drinks

#5 2021-04-19 08:54:03

Re: Two Drinks

Board footer