Question

PLS HELP ME WITH THIS QUESTION!!!!!

Answer 1

Answer: 24

Explanation:

Let the total number of problems be x.

After 15 minutes,
`x-(1)/(4)x=(3)/(4)x` problems are left.

After another 15 minutes,
`(3)/(4)x\left(1-(1)/(3))=(3)/(4)x\left((2)/(3) \right)=(1)/(2)x` problems are left.

This is equal to 12, meaning x = 24.