Simple Arithmatic

# Arithmetic & Mental Ability – 23

A man spends 89% of his monthly income. If he saves Rs. 2,244 per month. What is his monthly income

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The positions of how many digits in the number 351462987 will remain unchanged after the digits are rearranged in ascending order within the number
a) one
b) two
c) three
d) none

How many letters are there in the word ‘MARTINA’ which remain same in its position, if they are arranged in alphabetical order
a) 1
b) 2
c) 3
d) 4

10 men and 15 women together can complete a work in 6 days. It takes 100 days for one man alone to complete the same work. How many days will be required for one woman alone to complete the same work?
a) 225 days
b) 185 days
c) 245 days
d) 165 days

A man spends 89% of his monthly income. If he saves Rs. 2,244 per month. What is his monthly income
a) 20,400
b) 22,440
c) 24,000
d) 18,156

A wrist watch gains 12 seconds in every 3 hours. What time will it show at 10am on Tuesday, if it is set right on 3 pm on Sunday?
a) 10 past 3 minutes
b) 10 past 15 minutes
c) 10 past 10 minutes and 2 seconds
d) 10 past 2 minutes and 52 seconds

A bank compounds interest half yearly. A man deposited Rs. 25000 in the bank at a rate of 8%. The total interest at the end of one year is:
a) Rs. 2000
b) Rs. 4000
c) Rs. 2040
d) Rs. 4080

12 men can complete a work in 18 days. Six days after they started working, 4 more men joined them. How many days will all of them together complete the remaining work?
a) 10 days
b) 8 days
c) 11 days
d) 9 days

Find the least positive number which when added to 962 will make it a perfect square
a) 64
b) 127
c) 62
d) 95

Ravi travelled 4 km straight towards South. He turned left and travelled 6 km straight, then turned right and travelled 4 km straight. How far is he from the starting point?
a) 8 km
b) 10 km
c) 12 km
d) 18 km

If 30th January 2003 was Thursday, what was the day on 2nd March, 2003?
a) Sunday
b) Tuesday
c) Wednesday
d) Friday

If a triangle with base 8 cm has the same area as a circle with radius 8cm, then the corresponding altitude (in cm) of the triangle is
a) 12 π
b) 20 π
c) 16 π
d) 32 π

The smallest number which when diminished by 7, is divisible 12, 16, 18, 21 and 28 is:
a) 1008
b) 1015
c) 1022
d) 1032

A and B are brothers, C and D are sisters. A’s son is D’s brother. How is B related to D?
a) father
b) brother
c) uncle
d) grand father

By selling 1 dozen ball pens, a shopkeeper earned the profit equal to the selling price of 4 ball pens. His profit percent is
a) 50
b) 40
c) 33 1/3
d) 31 1/4

The difference between a two digit number and the number obtained by interchanging the positions of its digits is 36. What is the difference between the two digits of that number?
a) 4
b) 9
c) 3
d) can’t be determined

Introducing Asha to guests, Bhaskar said ‘Her father is the only son of my father’. How is Asha related to Bhaskar?
a) Daughter
b) Mother
c) Sister
d) Niece

A train 120 m long crosses a standing man in 15 seconds. The speed of the train is
a) 19.6 km/h
b) 18.8 km/h
c) 28.8 km/h
d) 22.6 km/h

The average of 25 results is 18. The average of first 12 of those is 14 and the average of last 12 is 17. What is the 13th result?
a) 74
b) 75
c) 69
d) 78

Two numbers are in the ratio 1:2. If 7 is added to both, their ratio changes to 3:5. The greatest number.
a) 24
b) 26
c) 28
d) 32

A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?
a) 20 hours
b) 25 hours
c) 35 hours
d) 55 hours

A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:
a) 4
b) 5
c) 6
d) 10

The sum of ages of 5 children born at the intervals of 3 years each is 50 years. What is the age of the youngest child?
a) 4 years
b) 8 years
c) 10 years
d) None of these

n aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1 hours, it must travel at a speed of:
a) 320 Kmph
b) 540 Kmph
c) 400 Kmph
d) 720 kmph

Rs. 9800 are invested partly in 9% stock at 75 and 10% stock at 80 to have equal amount of incomes. The investment in 9% stock is:
a) Rs. 4800
b) Rs. 5000
c) Rs. 5400
d) Rs. 5600

C is the mother of A and B. If D is the husband of B. what is C to D?
a) Mother
b) Aunt
c) Mother-in-law
d) Sister

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