Question

3. Ramita cycles to her college at an average speed of 15 km/h. She takes 30 minutes to reach her college.
If she wants to reach her college in 25 minutes, what should be her average speed?
4 In an army camn there is sufficient food for 120 cadets for 24 days. If 48 cadets leave the camp, how​

Answer 1

Step-by-step explanation:

Distance=Speed×Time

=12×20/60

=4km

Let speed be x km/hr in 15minutes

Distance=x×15/60

4=x×1/4

x=16km/hr

4 of cadets /day = 120/24=5

cadets/day food now= 120-48=72 food days = 72/5= 14.4 days