Question

Ximena has procrastinated all her homework until the very last minute. She has 2 hours to spare until midnight, which is when all her homework is due. Her biology homework will take 30 more minutes than her English homework, and her math homework will take three times as long as her biology homework. How long will each subject take?

Answer 1

Explanation:

Let,

For English = x min.

For Biology= (x+30) min.

For Math= 3(x+30) min.

2 hours= 2*60 = 120 min.

Now, x+(x+30)+3(x+30)=120

Or, x= 0 min.

For English = 0 min.

For Biology= 30 min.

For Math= 90 min