2.0k views
5 votes
A ruler 30 cm long is broken into two parts in the ratio 8:7. How long are the two parts?

1 Answer

5 votes
Pro tip: always assign ratios a variable.

So 8x + 7x = 30; 15x=30; x=2

Now plug in x;
8(2)=16 and 7(2)=14
So the pieces are 16 and 14 cm which adds up to 30.
User Alexey Usachov
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.