Q89 of 106 Page 310

Shabnam takes 20 minutes to reach her school if she goes at a speed of 6 km/h. If she wants to reach school in 24 minutes, what should be her speed?

Shabnam’s speed = 6 km/h = m/min


∴ Total distance covered by Shabnam in 20min =


=


= 2000m


If she wants to reach the school in 24 min, then should maintain the speed =


= m/min


= km/h


More from this chapter

All 106 →
87

44 cows can graze a field in 9 days. How many less/more cows will graze the same field in 12 days?

 88

30 persons can reap a field in 17 days. How many more persons should be engaged to reap the same field in 10 days?

 90

Ravi starts for his school at 8:20 a.m. on his bicycle. If he travels at a speed of 10 km/h. then he reaches his school late by 8 minutes but on travelling at 16 km/h he reaches the school 10 minutes early. At what time does the school start?

 91

Match each of the entries in column I with appropriate entry in column II.