Question

(b) A car can finish a certain journey in 10 hours at the speed of 32 km/h. By how much should its speed be increased so that it may take only 8 hours to cover the same distance? direct and indirect variations​

Answer 1

Answer:

By how much should its speed be increased so that it may take only 8 hours to cover the same distance? Let us consider the speed of the car as 'x' km/hr. Increased speed = 60 – 48 = 12km/hr. ∴ The speed should be increased by 12 km/hr. to cover the same distance.

Answer 2

QUESTION :

• A car can finish a certain journey in 10 hours at the speed of 32 km/h. By how much should its speed be increased so that it may take only 8 hours to cover the same distance? direct and indirect variations

GIVEN :

• car can finish a certain journey in 10 hours at the speed of 32 km/h

• speed be increased so that it may take only 8 hours to cover the same distance

TO FIND :

• HOW MUCH DISTANCE COVER IN 8 HOURS = ?

SOLUTION :

• car can finish a certain journey = 10 hours

• speed = 32 km/h

• distance cover = 8 hours

first we will using the value of a to do

this question :

10 × 32 = 8 ( a + 32)

320 = 8a + 256

8a = 320 - 256

8a = 64

= 8 km/h

speed be increased = 8 km/h