Question

A jar contains 7 blue marbles, 12 red marbles, and 4 green marbles.

What is the ratio of red marbles to the total number of marbles in the jar?

Answer 1

So let's take it step-by-step .. Do you know wat the total is ?
It's the sum of all marbles in the jar which is : 7 + 12 + 4 = 23
and a ratio is sth like that

Red : Blue : Green : Total
12 : 7 : 4 : 23

So to get the desired ratio : you simply get the desired data out
Answer >> 12 : 23

Let me know if you got it :)