Question

When Jonas does his math homework, he spends an average of 4 minutes on each problem. Last night he spent 1.8 hours on his non-math homework, plus he completed 12 math problems. Approximately how much time did Jonas spend in total on all of his homework last night?

Answer 1

2.6 hours.

Explanation:

That would be 1.8 hours plus 4 * 12 = 48 minutes.

48 minutes = 48/60 = 0.8 hours.

Total is 1.8 + 0.8 = 2.6 hours.