Question

Dina and Masha started out on a 10 km bike path at the same time. When Dina reached the end of the 10 km, Masha still had 2 km left to bike. If Dina’s biking speed was 5 km/h, find Masha’s biking speed.

Answer 1

4 km/h because 10-2 because of the 2 km left which =8 then you divide that by 2 to figure out the km per hour which = 4 so 4 km/h

Answer 2

4 km/hr

Explanation:

Dina and Masha started out on a 10 km bike path at the same time.

Distance = 10 km

Dina’s biking speed was 5 km/h

Time taken by Dina is Distance / speed

So
`time (Dina) = (10)/(5) =2`

Time taken by Dina is 2 hours

Same time is taken by Masha but 2 km left

So distance covered by Masha in 2 hours is 10-2 = 8 km

We know speed = distance / time

`speed of Masha = (8)/(2)=4`

Masha’s biking speed= 4km/hr