Latest FCI Assistant Grade-III Aptitude Question SOLUTION: A "CD" player having a price tag of Rs. 900 is sold for rs. 729 after 2 successive discounts. if the first discount was 10%, then what was the second discount ?

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(#M40152291) FCI ASSISTANT GRADE- Numerical Ability question Successive discounts Keep an EYE

A "CD" player having a price tag of Rs. 900 is sold for rs. 729 after 2 successive discounts. if the first discount was 10%, then what was the second discount ?

Asked In FCI Assistant Grade-III ANUSHKA (9 years ago)

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Pradeep  (9 years ago)

900*10%= 900*10/100 = 90 rupees

So Reduce 90 rupees..i.e 810

Now 810 - 729 = 81,
we have to convert 81 rupees in the terms of discount % on 810.

81/810 *100 = 10%.

So second discount is 10%, and total discount is 20%

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RAJNISH SINGH  (9 years ago)

900-729=171 discount
now 900*d/100=171
so total discount=19%
now according to formula..
-x- y+( x*y)/100= - d
(we take here negative sign because there is discount)
=> -10 -y + 10y/100 = -19
=> - y + y/10 = -19 + 10
=> -9y/10 = -9
=> so, y=10%

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Devendra Marghade  (9 years ago)

10%

If the second discount=x, then
900*(90/100)*[(100-x)/100] = 729
81*(100-x)=7290, x=10

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Venkatraman  (9 years ago)

To find 1st discount amount..
900*10%= 900*10/100 = 90 rupees

So Reduce 90 rupees.....!! So discount amount after 1st discount was 810.
Further to find second discount percentage...!
Now 810 - 729 = 81,
second discount Amount was 81.
we have to convert 81 rupees in the terms of discount % on 810.

(discount amount / amount after 1st discount ) * 100 = second discount percentage...
(81/810) * 100 = 10%.
second discount is 10%

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