Question

A car covers a certain distance in 3 hours 20 minutes at the rate of 42.6 km
per hour. How much time will it take to cover the same distance with a speed
of 35.5 km per hour?​

Answer 1

Answer:

4 hours

Step-by-step explanation:

So, it is in inverse proportion. And the formula for inverse proportion is

x(1) * y(1) = x(2) * y(2)

(IMP - I AM NOT MULTIPLING X AND Y WITH 1 AND 2. I AM MENTIONING THEM).

Convert 3 hours 20 min into minutes = 200min.

X(1) = 42.6

Y(1) = 200

X(2) = 35.5

Y(2) = Y - AS WE HAVE TO FIND IT

42.6 * 200 = 35.5 * Y

42.6 * 200/ 35.5 = Y

8520/35.5 = Y

240 MIN = Y

240 min in hours is 4 hours.

It will 4 hours/240 min take to cover the same distance with a speed

of 35.5 km per hour.