Number System Practice Test 4

Question : 7 of 40

Marks: +1, -0

If 40% of a number is 360, what will be 15% of 15% of that number?

Solution:

Let a number be x
then 40% of x = 360

⇒40/100×x=360

∴x=360×100/40=900

Now by the question,
15% of 15% of 900

=15/100×15/100×900

=81/4=20.25

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