Question

Marvin spent 3.4 hours which is 40% of his time at the recreational center playing ping pong. How long was Marvin at the recreational center?

Answer 1

Marvin spent 10 hrs 12 min at the recreational center.

or 10.2 hrs

Explanation:

3.4 hrs = 40% of x

3.4*2 = 80% of x

6.8 = 80% of x

6.8 + (1/2 * 6.8) = 100%

6.8 + 3.4 = 100%

10.2 = 100%

Answer 2

= 8.5 hours

= 8 hours 30 minutes

Explanation:

Full time spent = 100%

If 40% = 3.4 hours ,

What about 100% = ?

= (100 x 3.4) ÷ 40

= 340 ÷ 40

= 8.5 hours