Question

Find the single discount equivalent to two successive discounts of 20% and 10%.​

Answer 1

Step-by-step explanation:

Use Formula, Equivalent Discount = (A + B) - (AB/100) where A = First Discount, B =Second Discount. Equivalent Discount = 30 - 2 = 28%.

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Answer 2

Answer:

28%

Step-by-step explanation:

Let the market price (MP) of the item be Rs100.

Then, when 20% discount is added,

S.P.= Rs (100-(20% ×100))

S.P. =Rs80

Now, when 10% discount is added to Rs 80,

New S.P. (S.P.') =Rs (80-(10%×80))

(S.P.') = Rs 72

Now, let the single discount equivalent

to two successive discount be x.

Then, 100× x% = 28 (Since total

discount is

100-72=28)

100× x/100= 28

x=28

Therefore single discount is x%=28%.