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A single discount equivalent to three successive discounts
of 20%, 25% and 10% is
a) 55% b) 50% c)48% d)46%
plz specify the method... thanks
- 21 Answers
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Answer / aravind k
Intitally take 100 , 20% of 100 gives 80
25% of 80 gives 60
10% of 60 gives 54.
therefore 100 -54=46.
46 might be the answer.
| Is This Answer Correct ? | 257 Yes | 35 No |
Answer / parameshwar appi
net discount=a+b-(ab/100)
answer is 46
20 and 25 net discount is 20+25-(25*20/100)=40
similarly 40 and 10 is 40+10-(40*10/100)=46%
| Is This Answer Correct ? | 154 Yes | 20 No |
Answer / isha trivedi
100-20=80
100-25=75
100-90=90
now assume that the discount is given out of 100
so 80*75*90/100*100*100=0.54
so the one equivalent discount will be 1-0.54=0.46x100=46%
| Is This Answer Correct ? | 75 Yes | 16 No |
Answer / uday
let the value of the product be =x
after 20%discount the value becomes=x-(.2x)=.8x
now 25%discount on this value is given by=(.8x)(1-.25)
another 10%discount gives the cost as =(.8x)(1-.25)(1-.10) so the final cost is .54x
hence discount =1-.54=.46
that is 46% discount
| Is This Answer Correct ? | 55 Yes | 13 No |
Answer / ranjit kumar
formula for successive discount
(a+b)-(ab/100)
for 20% and 25% (20+25)-(20*25/100)=45-5=40%
similarly for 40% 10% (40+10)-(40*10/100)=50-4=46%
Hence Ans is D) 46%
| Is This Answer Correct ? | 37 Yes | 7 No |
Answer / ravi
100*(80/100)*(75/100)*(90/100)=54
so discount is 54 remaining is 46
| Is This Answer Correct ? | 35 Yes | 9 No |
Answer / kdscapricorn
c-a+b-(a*b/100)
where c is the net discount.
firstly put 20 n 25 as a and b respectively in the above formula...u'l b getin net discount i.e. c=40
then put 40 and 10 as a and b in the same formula..
the answer shud be 46%
| Is This Answer Correct ? | 22 Yes | 6 No |
Answer / francis
hi Mishra,
is there any proper method for finding this? can u explain it without assuming the initial value as 100 or some thing? i expect some formula to calculate it..
| Is This Answer Correct ? | 23 Yes | 15 No |
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