Answer / psunil

Shortcut formula for 3 successive discount formula if successive discounts given are a, b, c then total discount is a + b + c – (ab/100 +bc/100 + ca/100 – abc/10000)
20 + 25 + 10 – [20×25/100 + 25×10/100+10×20/100 – 20×25×10/10000]
= 55 – [5 + 2.5 + 2 – 0.5]
= 55 – [9.5 – 0.5]
= 46
----

Answer / pravin

(1-(0.8*0.75*0.90))*100 = 46%

Answer / guest

46%

Answer / sanjib routh

Let MP=100
SP=100*80/100*75/100*90/100 = 54
Equal to a single discount = (100-54)=46% Answer

Answer / kikz

Try finding out this one 30 %, 20%, 10%

(a) 60% (b) 50.4% (c) 50 (d) 49.6%

I got three different answers by three different methods.

Answer / muhammad chaudhary

100-20=80
100-25=75
100-10=90

now multiply (80*75*90)=ans
100-ans.

Answer / alia samreen...

100*(80/100*75/100*90/100)=54
let single discount be = d%
100(100-d)/100=54
d=46
So, Answer is 46...

Answer / jyoti

this que is solve
100-100*20/100=80
80-80*15/100=68
68-68*10/100=61.2
100-61.20=38.8
ans-38.8

Answer / sunil pradhan

Formula for 3 successive discount
A + B + C – (AB/100 + BC/100 + CA/100 – ABC/10000)
A = 20% B = 25% and C = 10%
Overall discount = 20 + 25 + 10 – (20×25/100 + 25×10/100 + 10×20/100 – 20×25×10/10000)
= 55 – (5 + 2.5 + 2 – 0.5)
= 55 – 9
= 46%
Option D

Answer / rohit shah

the formula to calculate successive discount is
c=a+b+(a*b)/100, first take 20% n 25%
then use the formula with c & 10%

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