Question

Q3. Find the single discount to three discounts of 40% , 60% and 80%.​

Answer 1

Successive discounts of 10%, 20% and 30% is equivalent to a single discount of :

[A]36%

[B]40.5%

[C]49.6%

[D]60%

49.6%

Single equivalent discount for successive discounts of 10% and 20%.

= \left ( 10+20-\frac{20\times 10}{100} \right )\% = 28\%

Single equivalent discount for 28% and 30%.

= \left ( 28+30-\frac{28\times 30}{100} \right )\% = 49.6\%

Hence option [C] is correct answer.