Question

1) A woman walks a certain distance in 84 min.bShe covers two thirds of it at 4 km/h and the rest at 5 km/h. Find the total distance she covered.

2) A man walks at 6 km/h and runs at 8 km/hmcHe covers 6 km in 50 min partly by running and partly by walking.

i) For how long did he walk?

ii) What distance did he cover walking?​

Answer 1

Answer- x = 8/3

Step-by-step explanation:

Let the total distance be

x

km.

She travels the first half at a speed of 5 kmph.

Hence, time taken is

x

2

÷

5

=

x

10

hours.

And, she covers the second half at a speed 8 kmph.

So, time taken is

x

2

÷

8

=

x

16

hours.

Total time taken is 26 minutes. i.e.,

26

60

hours.