If A + B = 15, B x C = 84, C ÷ 4 = 3, B + D = 18, then Solve the value of D - www.mathselab.com

If A + B = 15, B x C = 84, C ÷ 4 = 3, B + D = 18, then Solve the value of D?

Question


If A + B = 15,
B x C = 84,
C ÷ 4 = 3,
B + D = 18, then Solve the value of D?


A. 13
B. 8
C. 15
D. 11


Answer: D. 11


Solution:


A + B = 15 …. (1)

B x C = 84 …. (2)

C ÷ 4 = 3 …. (3)

B + D = 18 …. (4)

From (3), we get C = 12

From (2), we get B = 84/12 = 7

From (1), we get A = 15 – 7 = 8

From (4), we get D = 18 – 7 = 11

Hence, the value of D = 11.




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