two boys start from the same place, walk at the rate of 4 kilometre per hour and 4.5 km per hour respectively. how many kilometre will they be apart at the end of three and a half hours if they work in the same direction???​

Given

• Two boys start from the same point
• Speed of Boy₁ = 4 km/h
• Speed of Boy₂ = 4.5 km/h
• Time = 3.5 Hours

To Find

• The distance between the two boys

Solution

☯ Here we shall use the formula : Speed = Distance/Time

★ According to the given Question :

• Speed₁ = 4 km/h
• Time = 3.5 hours

→ Speed = Distance/Time

→ 4 = Distance/3.5

→ 4 × 3.5 = Distance

→ Distance = 14 km

• Speed₂ = 4.5 km/h
• Time = 3.5 hours

→ Speed = Distance/Time

→ 4.5 = Distance/3.5

→ 4.5 × 3.5 = Distance

→ Distance = 15.75 km

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● Distance Between the two boys will be the difference between the distance covered by boy₁ & boy₂

→ Distance Between the boys = Boy₂ - Boy₁

→ Distance Between the boys = 15.75 - 14

→ Distance Between the boys = 1.75 km