model 3 successive discount Section-Wise Topic Notes With Detailed Explanation And Example Questions
MOST IMPORTANT quantitative aptitude - 4 EXERCISES
The following question based on discount topic of quantitative aptitude
(a) Any one; all are equally good
(b) Third offer
(c) First offer
(d) Second offer
The correct answers to the above question in:
Answer: (b)
Using Rule 5,
(i) : Equivalent discount
= $(25 + 15 - {25 × 15}/100)$%
= (40 - 3.75) % = 36.25%
(ii) : Equivalent discount
= $(30 + 10 - {30 × 10}/100)$%
= (40 - 3) % = 37%
(iii) : Equivalent discount
= $(35 + 5 - {35 × 5}/100)$%
= (40 - 1.75) % = 38.25%
Clearly, third offer is best for a customer
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Read more problems on successive discount Based Quantitative Aptitude Questions and Answers
Question : 1
Applied to a bill for Rs.1,00,000 the difference between a discount of 40% and two successive discounts of 36% and 4% is :
a) Rs.4,000
b) Rs.2,500
c) Nil
d) Rs.1,440
Answer »Answer: (d)
Using Rule 5,(Special Case) : When two successive disounts are given, then overall discount is =$(D_1 + D_2 - {D_1D_2}/100)%$
Successive discounts of 36% and 4% is overall equals to
= $(36 + 4 - {36 × 4}/100)%$ = 38.56%
Percentage difference
= 40 - 38.56 = 1.44%
Difference between discount
= 1.44% of 100000
= ${1.44 × 100000}/100$ = Rs.1440
Question : 2
Two successive discounts of 20% and 20% is equivalent to a single discount of
a) 34%
b) 36%
c) 42%
d) 40%
Answer »Answer: (b)
Using Rule 5,
Equivalent single discount
= $(20 + 20 - {20 × 20}/100)$% = 36%
Question : 3
The difference between a single discount of 30% on Rs.550 and two successive discounts of 20% and 10% on the same amount is
a) Rs.44
b) Rs.22
c) Nil
d) Rs.11
Answer »Answer: (d)
Using Rule 5,(Special Case) : When two successive disounts are given, then overall discount is =$(D_1 + D_2 - {D_1D_2}/100)%$
Case I : A single discount of 30%
Case II : Two successive discounts of 20% and 10% Single equivalent discount
= $(20 + 10 - {20 × 10}/100)$% = 28%
Difference = (30 - 28)% = 2%
Required difference
= 2% of 550
=Rs. ${2 × 550}/100$ = Rs.11.
Question : 4
The equivalent single discount for two successive discounts of 15% and 10% is
a) 20.5%
b) 23.5%
c) 25%
d) 20%
Answer »Answer: (b)
Trick :
Equivalent discount
= $(15 + 10 - {15 × 10}/100)%$ = 23.5%
Question : 5
Successive discounts of 10% and 30% are equivalent to a single discount of :
a) 37%
b) 38%
c) 40%
d) 35%
Answer »Answer: (a)
Using Rule 5,
Equivalent discount
= 30 + 10 - ${30 × 10}/100$ = 37%
GET discount PRACTICE TEST EXERCISES
model 1 profit x after discount y
model 2 hiking & discounting
model 3 successive discount
model 4 mixed discount problems of marked price
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