Question

An insect is walking in a straight line. It
covers a distance of 15 cm per minute. It
comes back 2.5 cm after every 15 cm. How
long will it take to cover a distance of 1
metre?
​

Answer 1

15cm =1min

=15 -2.5 =12.5

1 m =100 cm

12.5 ×100

=1250 min

Answer 2

Step-by-step explanation:

Answer is 8 minutes

it takes 15 CM per minute

but it comes back 2.5 cm every 15 cm

15- 2.5 = 12.5

1 metre = 100 CM

it takes time to cover distance of 1 metre = 100/12.5

= 8 minutes