Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.

If 96 is divided into four parts proportional to 5, 7, 4, 8 then the smallest part is : a) 16 b)14 c)20 d) 18 Expl : Given ratio = 5 : 7 : 4 : 8 , sum of ratio = 24 :. The smallest part = (96 *4/24) = 16

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It takes 10 days for digging a trench of 100 m long, 50 m broad and 10 m deep. What length of trench, 25 m broad and 15 m deep can be dug in 30 days ?

February 23, 2017

It takes 10 days for digging a trench of 100 m long, 50 m broad and 10 m deep. What length of trench, 25 m broad and 15 m deep can be dug in 30 days ? a) 400 m b) 200 m c) 100 m d) 89m Expl : More days, more length (Direct) Less breadth, more length (Indirect) More depth, less length (Indirect Days 10 : 30; Breadth 25 : 50; : : 100 : x Depth 15 : 10; :. 10 * 25* 15 * x = 30 *50 * 10 *100 x= (30*50*10*100)/10*25*15 = 400 So the required length = 400m

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If A : B = 4 : 7 and B : C = 5 : 9 then A : B : C is :

February 23, 2017

If A : B = 4 : 7 and B : C = 5 : 9 then A : B : C is : a) 20 : 35 : 63 b) 35 : 36 : 63 c) 30 : 35 : 65 d)25 :34: 68 . Expl : A : B = 4 : 7 B : C = 5 :9 = 5*7/5 : 9 *7/5 = 7 : 63/5 A : B : C = 4 : 7 : 63/5 = 20 : 35 : 63

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