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PLS HELP ME WITH THIS QUESTION!!!!!
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PLS HELP ME WITH THIS QUESTION!!!!!

PLS HELP ME WITH THIS QUESTION!!!!!-example-1
User AndreFeijo
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1 Answer

6 votes

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.

User Mert Nuhoglu
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5.2k points
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