Question

If 10 boys walks 10 km in 10 days then how many days it will take for 3 boys to walk 10 km

Answer 1

It will take 100/3 days for 3 boys to walk 10 km.

Step-by-step explanation:

The problem can be written mathematically as follows,

Boys Path (km) Time (days)

10 10 10

3 10 ?

Here boys and time are related with inverse proportionality, and path and time are related with simple proportionality.

Hence the number of required time

= 10 * 10/3 * 10/10 days

= 100/3 days

Therefore it will take 100/3 days for 3 boys to walk 10 km. (Ans.)

Note: The column of 'Path (km)' can be excluded from the mathematical expression because it is same in both cases.