Question

find a single discount equivalent to three successive discounts of 20%,10%and 5/2%.

Answer 1

firstly we have to find average.

20+10+5/2
----------------
3
= 30+5/2
-----------
3
= 30+2.5
-----------
3
= 32.5
-------
3
= 10.83

Answer 2

Heya user !!!

Here's the answer you are looking for

Let the original price be ₹x

20% discount means 20x/100 is reduced.

20x/100 = x/5

New amount = x - x/5 = 4x/5

Now 10% discount on new amount.

4x/5 - 4x/5 × 10/100

= 4x/5 - x/25

= 19x/25

Again 5/2% discount make the price

19x/25 - 19x/25×5/200

=19x/25 - 19x/1000

= 741x/1000

♦ The single discount = (x - 741x/1000)/x × 100
=259x/1000x × 100

=259/10 = 25.9%



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