Q80 of 106 Page 310

A swimming pool can be filled in 4 hours by 8 pumps of the same type. How many such pumps are required if the pool is to be filled in hours?

A swimming pool can be filled in 4 hours by 8pumps.


If we want to fill the swimming pool in 1h,


we required 4×8 = 32pumps


in the number of pumps required = 32



More from this chapter

All 106 →
78

If a and b vary inversely to each other, then find the values of p, q, r: x, y, z and l, m, n.

(i)


(ii)


(iii)

79

If 25 metres of cloth costs Rs. 227.50, then

(i) What will be the cost of 40 metres of the same type of cloth?


(ii) What will be the length of the cloth bought for Rs 810?

 81

The cost of 27 kg of iron is Rs. 1,080, what will be the cost of 120 kg of iron of the same quality?

 82

At a particular time, the length of the shadow of Qutub Minar whose height is 72 m is 80 m. What will be the height of an electric pole, the length of whose shadow at the same time is 1000 cm?