69.8k views
1 vote
30% of Number A is the same as 40% of Number B.

What could A and B be?
Think of lots of answers if you can.

User Bnlucas
by
6.7k points

1 Answer

0 votes

30% of number A means


(30A)/(100)=(3A)/(10)

similarly, 40% of number B means


(40B)/(100)=(2B)/(5)

These must be equal, so we have


(3A)/(10)=(2B)/(5)

Multiply both sides by 10 to get


3A=4B \iff A=(4B)/(3)

So, you can choose any number for A, and then you multiply it by 4/3 to get B. There are infinitely many solutions to this equation.

User HongKilDong
by
6.5k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.