Simple Arithmatic

# Arithmetic & Mental Ability – 34 HCF of two numbers is 24 and their LCM is 1344. If difference between numbers is 24. Then their sum is

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A can do a piece of work in 12 days. B can do it in 15 days. C can do it in 20 days. If they all work together the number of days need to complete the work is:
a) 5
b) 14
c) 7
d) 13

A man walks at 5kmph for 6hr and at 4km/h for 12hr. His average speed is
a) 4 1/3 km/h
b) 7 2/3 km/h
c) 9 Â½ km/h
d) 8 km/h

If the price of sugar is increased by 10% by how much percent must the consumption of sugar be diminished so as not to increase the expenditure.
a) 8.20%
b) 9.09%
c) 7.20%
d) 11.11%

10% of x is 25% of y then x:y is
a) 5:2
b) 2:5
c) 1:2
d) 2:1

A and B started a business in partnership investing Rs. 20,000 and Rs. 15,000 respectively. After six months, C joined them with Rs. 20,000. What will be B's share in total profit of Rs. 25,000 earned at the end of 2 years from the starting of the business?
a) Rs. 7500
b) Rs. 9000
c) Rs. 9500
d) Rs. 10,000

If 34 men completed 2/5th of a work in 8 days working 9 hours a day. How many more man should be engaged to finish the rest of the work in 6 days working 9 hours a day?
a) 89
b) 98
c) 102
d) 142

HCF of two numbers is 24 and their LCM is 1344. If difference between numbers is 24. Then their sum is
a) 364
b) 356
c) 332
d) 360

The angle between the minute hand and the hour hand of a clock when the time is 4.20, is:
a) 0º
b) 10º
c) 5º
d) 20º

If 3x+y = 81 and 81x-y = 3, then the value of x is
a) 42
b) 15/8
c) 17/8
d) 39

A single discount equivalent to three successive discounts of 20%, 25% and 10% is
a) 55%
b) 50%
c) 48%
d) 46%

Two numbers x and y are respectively 20% and 50% more than a third number. x is how much per cent of y?
a) 30
b) 45
c) 60
d) 80

In how many ways 2 students can be chosen from the class of 20 students?
a) 190
b) 180
c) 240
d) 390

How many pairs of letters are there in the word DELUSION which have as many letters between them in the word as there are in English alphabet
a) none
b) one
c) two
d) three

A train 150 m long moving at a speed of 35 meters per second overtakes a man moving at 5 meters/sec in opposite direction. The train will pass the man in
a) 4.50 s
b) 5.25 s
c) 3.75 s
d) 6.50 s

A, B and C working together can do a job in 10 days. If A and C can together can do it in 20 days and B and C together can do it in 15 days. If A and B work together the number of days required to complete:
a) 12
b) 14
c) 16
d) 18

A man wants to reach a window which is 40 feet above the ground. The distance from the foot of the ladder to the wall is 9 feet. How long should the ladder be ?
a) 9 feet
b) 81 feet
c) 41 feet
d) 49 feet

Find the odd one from the following
a) Land
b) Lake
c) Sea
d) River

If 13×75 = 5731, 27×34 = 4372, 15×42 = 2451 then 16×36 = ?
a) 1636
b) 6361
c) 576
d) 3616

If 4 men or 5 women can do a piece of work in 40 days. how many days will 8 men and 15 women take to do the same work.
a) 10 days
b) 12 days
c) 8 days
d) 20 days

The ratio of Copper and Zinc in brass is 13:7. How much Zinc will be there in 100 kg of brass.
a) 20 kg
b) 55 kg
c) 35 kg
d) 40 kg

There are 30 students in a class. One student weighing 25 kg goes away and a new student joins the class. If the average weight is then increased by 200 grams. What is the weight of new student
a) 32 kg
b) 31 kg
c) 30 kg
d) 29 kg

A is thrice as good a workman as B, and takes 10 days less to do a piece of work than B takes. B alone can do the whole work work in
a) 21 days
b) 15 days
c) 18 days
d) 24 days

A train traveling at a speed of 90kmph crosses a pole in 10 seconds. The length of the train is
a) 200m
b) 250m
c) 300m
d) 350m

A train covers a distance in 50 min, if it runs at a speed of 48kmph on an average. The speed at which the train must run to reduce the time of journey to 40min will be
a) 45 min
b) 60 min
c) 55 min
d) 70 min 