Ved spends 40% of his prize money. He spends the money in the following ratio:
Clothes : Books : Music CDs = 10 : 2 : 3
a) If Ved sold the books at a profit of 5%, then find the selling price of the books.
Juhi invested the money in ‘XYZ’ Bank for a year and got Rs.6480 at the end of the year.
b) Calculate the increase percent in her money
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Answer:
(a) ₹336
steps : Ved got 18000/3 = 6000 rupees
from that he spend 40 % means ₹6000 of 40% = ₹2400
ATQ : let the ratio be 10x + 2x + 3x
=> 10x + 2x + 3x = 2400
=> 15x = 2400
=> x = 2400/15
=> x = 160
=> 10*160 = ₹1600
=> 2*160 = ₹320
=> 3*160 = ₹480
we want profit of 5% after sold the book :
₹ 320 of 5% = ₹16
= ₹320 + ₹16 = ₹336
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