Percentage Practice Test 8 with solutions

Question : 22 of 38

Marks: +1, -0

If x% of 280 + 18% of 550 = 143.8, then find the value of x.

Solution:

x/100×280+18/100×550=143.8

⇒{14x}/5+99=143.8

⇒x={44.8×5}/14=16

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