Percentage Practice Test 5 with solutions

Question : 27 of 40

Marks: +1, -0

If 14% of 80 + x% of 90 = 31.9, then find the value of x.

Solution:

14/100×80+x/100×90=31/9

⇒ 0.9x = 31.9 - 11.2

∴x=207/9=23

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