Question

The train station clock runs too fast and gains 7 minutes every 4 days. How many minutes and seconds will it have gained at the end of 10 days

Answer 1

7mins in 4 days
14 mins in 8 days
3.5 mins for 2 days

Answer 17 mins 30 secs

Answer 2

17 minute 30 seconds.

Explanation:

To solve this question we will apply unitary method.

∵ in 4 days train station clock gains = 7 minutes

∴ in 1 day the clock will gain =
`(7)/(4)` minute

∴ in 10 days train clock will gain =
`(7)/(4)* 10`

=
`(7* 10)/(4)`

=
`(70)/(4)`

=
`(35)/(2)`

=
`17(1)/(2)` minutes

or 17 minutes 30 seconds.