Question

Find a single discount ( as percent) equivalent to following successive discount. 1) 10%, 20% , and 20%

Pl answer fast

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Answer 1

Let the discount be 100.

After discount of 10%, its value is (100 - 10) =  90.

Now, discount of 20%, its value will be 90(1 - 20/100) = 7200/100 = 72.

Now, discount of 20%, its value will be 72(1 - 20/100) = 5760/100 = 57.6.

Hence,

Single equivalent discount = 100 - 57.6

= > 42.4.

Hope this helps!

Answer 2

this i copied from net
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