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Suresh spends 35% of his income on grocery, 25% on children’s health and 80% of the remaining on house rent. What percent of his income he is left with?

Correct

Answer – 2. 8%
Explanation:
Let the total income be x.
Income left = (100 – 80)% of [100 – (35 + 25)]% of x = 20% of 40% of x = 20/100 * 40/100 * 100)% of x = 8% of x.

Incorrect

Answer – 2. 8%
Explanation:
Let the total income be x.
Income left = (100 – 80)% of [100 – (35 + 25)]% of x = 20% of 40% of x = 20/100 * 40/100 * 100)% of x = 8% of x.

Question 5 of 10

5. Question

1 points

Category: Quantitative Aptitude

The profit of Ajay, Bharat, and Chitra are in the ratio of 1 : 2 : 3. The profit of Bharat and Chitra together is Rs. 6000. By what percent is the profit of Chitra more than that of Ajay?

Correct

Answer – 2.200%
Explanation:
Let the profit of Ajay, Bharat, Chitra be x, 2x and 3x respectively.
2x + 3x = 6000 => x = 1200.
Ajay’s profit = Rs. 1200, Bharat’s profit = Rs. 2400, and Chitra’s profit = Rs. 3600.
Chitra’s profit over Ajay’s=[ (2400 /1200) x 100] = 200%

Incorrect

Answer – 2.200%
Explanation:
Let the profit of Ajay, Bharat, Chitra be x, 2x and 3x respectively.
2x + 3x = 6000 => x = 1200.
Ajay’s profit = Rs. 1200, Bharat’s profit = Rs. 2400, and Chitra’s profit = Rs. 3600.
Chitra’s profit over Ajay’s=[ (2400 /1200) x 100] = 200%

Question 6 of 10

6. Question

1 points

Category: Quantitative Aptitude

A retailer buys two products for Rs. 7500. One product he sells at a profit of 16% and the other product at 14% loss. In the deal, the retailer makes neither any profit nor any loss. What is the difference between the selling price of both the products?

Correct

Answer – 1. Rs. 620
Explanation:
Let the C.P of one product is Rs. P
and that of other is Rs. (7500 – P)
C.P = S.P
=> Px(116/100) + (7500-P)x(86/100) = 7500
=> 30P = 105000
=> P = 3500
Required difference between selling prices
= Rs. [(3500/100) x 116] – [(4000/100) x 86]
= 4060-3440
= Rs. 620

Incorrect

Answer – 1. Rs. 620
Explanation:
Let the C.P of one product is Rs. P
and that of other is Rs. (7500 – P)
C.P = S.P
=> Px(116/100) + (7500-P)x(86/100) = 7500
=> 30P = 105000
=> P = 3500
Required difference between selling prices
= Rs. [(3500/100) x 116] – [(4000/100) x 86]
= 4060-3440
= Rs. 620

Question 7 of 10

7. Question

1 points

Category: Quantitative Aptitude

Ramesh rows in still water with a speed of 4.5 kmph to go to a certain place and comes back. Find his average speed for the whole journey, if the river is flowing with a speed of 1.5 kmph?

Correct

Answer – 2. 4 kmph
Explanation:
Let the distance in one direction = x km
Speed in still water = 4.5 kmph
Speed of current = 1.5 kmph
Hence, speed in upstream = 4.5 – 1.5 = 3 kmph
Speed in downstream = 4.5 + 1.5 = 6 kmph
Time taken by Rajesh to row upwards = x/3 hours
Time taken by Rajesh to row downwards = x/6 hours
Average Speed = 2x/(x/3 + x/6) = 4 kmph

Incorrect

Answer – 2. 4 kmph
Explanation:
Let the distance in one direction = x km
Speed in still water = 4.5 kmph
Speed of current = 1.5 kmph
Hence, speed in upstream = 4.5 – 1.5 = 3 kmph
Speed in downstream = 4.5 + 1.5 = 6 kmph
Time taken by Rajesh to row upwards = x/3 hours
Time taken by Rajesh to row downwards = x/6 hours
Average Speed = 2x/(x/3 + x/6) = 4 kmph

Question 8 of 10

8. Question

1 points

Category: Quantitative Aptitude

Prince is 30% more efficient than Queen. How much time will they, working together, take to complete a job which Prince alone could have done in 23 days?

Correct

Answer –2. 13 days
Explanation:
Ratio of time taken by Prince & Queen = 100 : 130 = 10:13
Let Queen takes x days to do the work
Then, 10:13 :: 23:x
=> x = 23×13/10
=> x = 299/10
Prince’s 1 day’s work = 1/23
Queen’s 1 day’s work = 10/299
(Prince+Queen)’s 1 day’s work = (1/23 + 10/299) = 23/299 = 1/13
Hence, Prince and Queen together can complete the work in 13 days.

Incorrect

Answer –2. 13 days
Explanation:
Ratio of time taken by Prince & Queen = 100 : 130 = 10:13
Let Queen takes x days to do the work
Then, 10:13 :: 23:x
=> x = 23×13/10
=> x = 299/10
Prince’s 1 day’s work = 1/23
Queen’s 1 day’s work = 10/299
(Prince+Queen)’s 1 day’s work = (1/23 + 10/299) = 23/299 = 1/13
Hence, Prince and Queen together can complete the work in 13 days.