Question

If two successive discounts 10% and 20% are given on a radio, then find the single equivalent discount. ​

Answer 1

Answer:

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

Step-by-step explanation:

Answer 2

Answer:

28% total discount.

Step-by-step explanation:

Let the price of the radio be P

Giving a discount of 10% it becomes,

• ((100-10)/100) X P
• = 0.9 P

Now, giving additional discount of 20% price is,

• ( (100-20)/100 ) X (0.9)P
• (0.8) X (0.9) X P
• (0.72) P

So the single equivalent discount becomes,

=P - (0.72) .P

= 0.28P

= 28% discount on radio

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