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Question

Find the value of x. if
33.5×212×422.5÷22.5×73.5=(21)x

A
8
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B
10
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C
12.5
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D
6.5
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Solution

The correct option is A 8
(3)3.5×(3×7)2×(2×3×7)2.5×73.522.5=(3×7)x

3(3.5+2+2.5)×7(2+2.5+3.5)×22.522.5=3x×7x

38×78=3x×7x

x=8. [A]

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