Quantitative Aptitude Questions and Answers With Explanation (Practice set 20)

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Q1:

January 1, 2007, was Monday. What day of the weeklies on Jan. 1, 2008?

A) Monday B) Tuesday
C) Wednesday D) Sunday

Q2:
On 8th Feb 2005, it was Tuesday. What was the day of the week on 8th Feb 2004?

A) Tuesday B) Saturday
C) Friday D) Sunday

Q3:
A cistern 6m long and 4 m wide contains water up to a depth of 1 m 25 cm. The total area of the wet surface is:

A) 49 B) 50
C) 53.5 D) 55

Q4:
Find out the wrong number in the given sequence of numbers.
56, 72, 90, 110, 132, 150

A) 72 B) 110
C) 132 D) 150

Q5:
Which two months in a year have the same calendar?

A) October, December B) April, November
C) June, October D) April, July

Q6:
If 2 tables and 3 chairs cost Rs, 3500 and 3 tables and 2 chairs cost Rs. 4000, then how much does a table cost?

A) 500 B) 1000
C) 1500 D) 2000

Q7:
In a 500 m race, the ratio of the speeds of two contestants A and B is 3: 4. A has a start of 140 m. Then, A wins by:

A) 60m B) 40m
C) 20m D) 10m

Q8:
A mixture of 150 liters of wine and water contains 20% water. How much more water should be added so that water becomes 25% of the new mixture?

A) 10 liters B) 20 liters
C) 30 liters D) 40 liters

Q9:
A sum was put at simple interest at a certain rate for 3 years. Had it been put at a 2% higher rate, it would have fetched Rs 360 more. Find the sum.

A) Rs.4000 B) Rs.9000
C) Rs.5000 D) Rs.6000

Q10:
270 candidates appeared for an examination, of which 252 passed. The pass percentage is :

A) (91 + 1/3)% B) (93 + 1/3 )%
C) (97 + 1/3 )% D) (98 + 1/3) %

ANSWERS WITH EXPLANATION


Answer1: B) Tuesday
Explanation:

The year 2007 is an ordinary year. So, it has 1 odd day.
1st day of the year 2007 was Monday
1st day of the year 2008 will be 1 day beyond Monday
Hence, It will be Tuesday.

Answer2: D) Sunday
Explanation:

The year 2004 is a leap year. It has 2 odd days.
The day on 8th Feb 2004 is 2 days before the day on 8th Feb 2005.
Hence, this day is Sunday

Answer3: A) 49
Explanation:

Area of the wet surface = [2(lb + bh + lh) - lb] 
= 2(bh + lh) + lb 
= [2 (4 x 1.25 + 6 x 1.25) + 6 x 4]m square
= 49m square

Answer4: D) 150
Explanation:

The numbers are 7 x 8, 8 x 9, 9 x 10, 10 x 11, 11 x 12, 12 x 13.
So, 150 is wrong.

Answe5r: D) April, July
Explanation:

If the period between the two months is divisible by 7, then that two months will have the same calendar.
(a). Oct + Nov  = 31 + 30 = 61 (not divisible by 7)
(b). Apr + May + Jun + Jul + Aug + Sep + Oct = 30 + 31 + 30 + 31 + 31 + 30 + 31  = 214 (not divisible by 7)
(c). Jun + July + Aug + Sep = 30 + 31 + 31 + 30 = 122 (not divisible by 7)
(d). Apr + May + June = 30 + 31 + 30 = 91 (divisible by 7)
Hence, April and July months will have the same calendar.

Answer6: B) 1000
Explanation:

Let the cost of a table and that of a chair be Rs. x and Rs, y respectively.
Then, 2x + 3y = 3500 ...(i)
and 3x + 2y = 4000 .....(ii)
solving (i) and (ii) we get x = 1000, y = 500 

Answer7: C) 20m
Explanation:

To reach the winning post A will have to cover a distance of (500 - 140)m, i.e., 360 m.
While A covers 3 m, B covers 4 m.
While A covers 360 m, B covers (4/3)*360 = 480 m.
Thus, when A reaches the winning post, B covers 480 m and therefore remains 20 m behind.
A wins by 20 m.

Answer8: A) 10 liters
Explanation:

Number of liters of water in 125 liters of the mixture = 20% of 150 = 1/5 of 150 = 30 liters
Let us Assume that another 'P' liters of water are added to the mixture to make water 25% of the new mixture. So, the total amount of water becomes (30 + P) and the total volume of the mixture becomes (150 + P)
Thus, (30 + P) = 25% of (150 + P)
Solving, we get P = 10 liters

Answer9: D) Rs.6000
Explanation:

Let sum = P and original rate = R. Then
[(P * (R+2) * 3)/100] - [ (P * R * 3)/100] = 360
3P*(R+2) - 3PR = 36000
3PR + 6P - 3PR = 36000
6P = 36000
P = 6000

Answer10: B) (93 + 1/3 )%
Explanation:

Pass percentage  =[(252/270)*100] % =280/3 % = (93+1/3) %

 

Also Practice:  Quantitative Aptitude Questions and Answers With Explanation (Practice set 19)

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