Time and Distance
Math MCQs

Question :    Find the distance covered by a car in 20 hours if it covers a distance of 84 km in 10 hours.

Correct Answer  168 km

Solution & Explanation

Solution

Given,

Distance = 84 km

Time = 10 hour

Thus, distance covers in 20 hour = ?

Here the speed and time are given. So, we need to find the speed to calculate the distance covers in the given time.

Method (1) Using Formula

Calculation of Speed using formula

Formula to find the speed

Speed = ^Distance/_Time

= ⁸⁴/₁₀ = 8.4 km/h

Thus, speed = 8.4 km/h

Calculation of the distance in the given time using formula

Formula to find the distance

Distance = Speed × Time

= 8.4 km/h × 20 hour = 168 km

Thus, the distance covered in the given time = 168 km Answer

Method (2) Using Unitary Method

Calculation of the Distance using formula

Given,

Distance = 84 km

Time = 10 hour

Thus, distance covers in 20 hour = ?

∵ In 10 hours the distance covered = 84 km

∴ In 1 hour the distance covered = ⁸⁴/₁₀ km

∴ In 20 hours the distance covered

= ⁸⁴/₁₀ × 20 km

= ^{84 × 20}/₁₀ km

= ¹⁶⁸⁰/₁₀ = 168 km

Thus, the distance covered in the given time = 168 km Answer

Similar Questions

(1) At a certain speed a scooty covers a distance of 88 km in 4 hours. How much distance will it cover in 5 hour?

(2) Find the distance covered by a ball in 26 hours if it covers a distance of 96 km in 16 hours.

(3) At a certain speed a scooty covers a distance of 48 km in 4 hours. How much distance will it cover in 5 hour?

(4) By running at a speed of 19 km/h how much distance a car will cover in 5 second?

(5) Find the distance covered by a moving object in 28 hours if it covers a distance of 84 km in 18 hours.

(6) Find the distance covered by a car in 20 hours if it covers a distance of 70 km in 10 hours.

(7) Find the distance covered by a scooty in 22 hours if it covers a distance of 90 km in 12 hours.

(8) Find the distance covered by a ball in 26 hours if it covers a distance of 94 km in 16 hours.

(9) By running at a speed of 42 km/h how much distance a motor bike will cover in 8 second?

(10) By running at a speed of 41 km/h how much distance a bus will cover in 9 second?