Two successive discount of 10% and 20% are equivalent to a single discount of:
A. 30%
B. 28%
C. 26%
D. 25%
Answer: Option B
Solution(By Examveda Team)
Use Formula, Equivalent Discount = (A + B) - $$\frac{{{\text{AB}}}}{{100}}$$ where A = First Discount, B =Second Discount. Equivalent Discount = (20 + 10) - $$\frac{{20 \times 10}}{{100}}$$ Equivalent Discount = 30 - 2 = 28% Graphic Change Method 100 == 20%(disc.) ⇒ 80 == 10%(disc.) ⇒ 72 Equivalent discount = 28%This Question Belongs to Arithmetic Ability >> Profit And Loss
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Related Questions on Profit and Loss
A. 45 : 56
B. 45 : 51
C. 47 : 56
D. 47 : 51
A. Rs. 2600
B. Rs. 2700
C. Rs. 2800
D. Rs. 3000
A. A neither losses nor gains
B. A makes a profit of 11%
C. A makes a profit of 20%
D. B loses 20%
A. Rs. 3,750
B. Rs. 3,250
C. Rs. 2,750
D. Rs. 2,250
Easy method -
x+y-xy/100
= 20+10-20*10/100
=30-2
=28