Question

a boy can run 49 metres in 4.2 seconds how far can he run in 4.5 seconds

Answer 1

Answer:

52.5 meters

Step-by-step explanation:

In 4.2 second the boy can run 49 meters.

In one second the boy can run- 49/4.2

In 4.5 seconds the boy can run- 49/4.2 × 4.5

This is equal to- 52.5 meters.

Answer 2

Question:

a boy can run 49 metres in 4.2 seconds how far can he run in 4.5 seconds

To find:

seconds how far can he run in 4.5 seconds

Given:

A boy can run 49 metres in 4.2 seconds

Solution:

The boy in 4.2 seconds can run 49 meters

The boy in 1 second can run (49/4.2)meters

The boy in 4.5 seconds can run (49/4.2×4.5)meters

=52.5meters(approx)

Method used:

Unitary method

Answer:

The boy can run 52.5meters in 4.5seconds