If 90% of 750 + 70% of 850 = x% of 12700, then find the value of x.

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If 90% of 750 + 70% of 850 = x% of 12700, then find the value of x.

A5

B30

C20

D10

Answer:

D. 10

Read Explanation:

90% of 750 + 70% of 850 = x% of 12700 ⇒ 750 × (90/100) + 850 × (70/100) = 12700 × (x/100) ⇒ 675 + 595 = 127x ⇒ 1270/127 = x x = 10

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