If Suresh distributes his pens in the ratio of 1/2 : 1/4 : 1/5 : 1/7 between his four friends A, B, C and D, then find the total number of pens Suresh should have?
Pick one:
A) 153
B) 156
C) 186
D) 158
E) 191
Here, A : B : C : D = 1 / 2 : 1 / 4 : 1 / 5 : 1 / 7   1) L.C.M of 2, 4, 5, 7 is 140   2) Find the number of pens each friend received --------- (To find no. of pens each friend has, multiply the ratio with the L.C.M. calculated)   A = (1/2) x 140 = 70   B = (1/4) x 140 = 35   C = (1/5) x 140 = 28   D = (1/7) x 140 = 20   3) Total number of pens = (70 x + 35 x + 28 x + 20 x) = 153 x   Minimum number of pens (x) = 1   Therefore, total number of pens = 153 pens.   Correct option :153
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If Suresh distributes his pens in the ratio of 1/2 : 1/4 : 1/5 : 1/7 between his four friends A, B, C and D, then find the total number of pens Suresh should have?