Question

2. A motor boat goes 20 km in 1 hour.
a) How long will it take to go 70 km?
b) How far will it go in 5 1 2 hours?​

Answer 1

a) Time taken to cover 20 km = 1 hour

Time taken to cover 1 km = 1/20 hour

Hence, Time taken to cover 70 km = 1/20×70

= 7/2 hr

= 3.5 hours

b) Are you asking 512 hours or this ↓

$5 \tfrac{1}{2}$

Which one bro?

Answer 2

7/2 this is the answer of your question