Question

Mohan had 3 hours of free time in the evening. He spent 45 minutes on home-work and one one upon two hours on games. How much free time was he left with?

Answer 1

Answer:

Given :

Total number of free time = T = 3 hours

Time spend on home work = t_1t

1

= 45 minutes

Time spend on games = t_2t

2

= 112 minutes

To Find :

How much free time was left

Solution :

Let The hours of free time left = t_3t

3

hours

∵ Total number of free time = Time spend on home work + Time spend on games + The hours of free time left

Or, T = t_1 + t_2 + t_3t

1

+t

2

+t

3

Or, t_3t

3

= T - ( t_1 + t_2t

1

+t

2

)

Or, t_3t

3

= 3 hours - ( 45 min + 112 min )

Or, t_3t

3

= 3 hours - ( 157 min )

Or, t_3t

3

= 3 × 60 min - 157 min ( ∵ 1 hours = 60 min )

Or, t_3t

3

= 180 min - 157 min

∴ t_3t

3

= 23 min

Hence, The free time that was left with Mohan is 23 minutes Answer