Question

With the money arvind has, he can buy 50 pens or 150 pencils. He kept 10% of it aside for taxi fare and with the remaining, he purchased 54 pencils and n pencils valu of n

Answer 1

total money i can buy = 50 pens or 150 pencils

Taxi fare= 10% of Total Money

Rem Money = 100%-10% = 90% of Total Money

With Rem Money I can buy:

90% of pens = 90/100 * 50 = 45 pens.

or

90% of pencils = 90/100 * 150 = 135 pencils.

Pencils actually bought = 54 pencils

% of Rem Money spent on pencils = 54/135 * 100 = 40% Rem Money

Rem Money left of pens = 100% - 40% = 60%

Pen bought with Rem Money left = 60/100 * 45 = 27 pens

So, P= 27 pens

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