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MATHEMATICS

JAMB 2015 - Question 38

Mathematics 2015 JAMB Past Questions - Question 38: Age 1 2 3 4 5 6 7No of child 6 x 16 2x-1 15 12 18The distribution above shows the ages of 120 children .Find the value of x.

Age 1 2 3 4 5 6 7No of child 6 x 16 2x-1 15 12 18The distribution above shows the ages of 120 children .Find the value of x.

A: 22

B: 20

C: 18

D: 16

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Correct Answer

Explanation

6+x+16+2x-1+15+12+18=1203x+66=1203x=120-66x=18