NTSE Stage 2 MAT 2018 Exam Question Paper

Question : 11 of 100

Marks: +1, -0

If sum of the number of people in only B and the number of people common in both A and B is 63 and the number of people in B is twice the number of people in A, then the values of x and y are respectively.

15, 4
48, 5
51, 7
51, 8

Validate

Solution:

ATP

x+y+5=63

x+y=58

........(1)

x+y+5+11=2(15+y+5+10)

{x}+{y}+16=60+2{y}

58+16=60+2y

(from equation (1))

y=7

∴x+7=58

x=51

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