- 6 men or 8 women or 3 boys completed certain work in a day is equal. Find in how many days a man and a boy can complete the three-fourth of same work together ?
2 days3 days5 days6 days1.5 daysOption E

Let total work = 48

6 men = 8men = 3 boys

efficiency of a man = 48/6 = 8

efficiency of a woman = 48/8 = 6

efficiency of a boy = 48/3 = 16

days require = 48/(16 + 8) * 3/4 = 1.5 days - A sum becomes rs.9280 in 6 years and becomes rs.10440 in 8 days at the same rate on simple interest. Find compound interest earned in 2 years on rs.6000 at same rate of interest ?
15201840254013401260Option E

SI for 2 years = 10440 – 9280 = 1160

SI for 6 years = 1160/2 * 6 = 3480

sum = 9280 – 3480 = 5800

rate interest = 3480/(5800 * 6) *100 = 10%

CI for 2 years = 10 + 10 + 10 * 10/100 = 21%

CI = 6000 * 21/100 = 1260 - A bat was sold at rs,1260 after giving 30% discount on market price. If discount was not given, then he would have earned 50% profit. Find cost price of bat ?
14001280180012001440Option D

Market price of bat = 1260/70 * 100 = 1800

CP = 1800/150 * 100 = 1200 - Two trains travel from Mumbai to Bangalore and Bangalore to Mumbai in 10 hours and 12 hours respectively. Both trains started simultaneously at 8 am and the train started from Mumbai met with accident at 12 pm. Find percentage reduction in speed of train started from Mumbai, if they meet each other at 2 pm, assume there is no loss of time in accident ?
30%48%50%42%20%Option C

Ratio of speed is inversely proportional to time taken if distance is constant.

Let speed of Mumbai to Bangalore travelling train = 6x km/hr

speed of Bangalore to Mumbai travelling train = 5x km/hr

Let total distance = 60x km

let speed of train after accident = y km/hr

60x = 4 (6x + 5x) + 2 (y + 5x)

y = 3x km/hr

reduction in speed = 6x – 3x/6x * 100 = 50% - The radius of a circle is 14 km. What is area of another circle having radius 1.5 times of the actual circle ?
1540 cm^21386 cm^21440 cm^21450 cm^21240 cm^2Option B

Radius of another circle = 14 * 1.5 = 21 cm

area = πr^2 = 22/7 * 21 * 21 = 1386 cm^2 - Directions : What will come in place of questions (?) mark in the following missing series ?

4, 2, 3, 7.5, 26.25, ?120.125118.5114.5118.125120Option D

The series is, (* .5), (* 1.5), (* 2.5), (* 3.5), (* 4.5) - 148, 196, 268, 364, 484, ?
650640452620628Option E

The series is, (+ 48), (+ 72), (+ 96), (+ 120), (+ 144), - 46, 52, ?, 136, 256, 466
8478687680Option D

The series is, (+ 2^3 – 2), (+ 3^3 – 3), (+ 4^3 – 4), (+ 5^3 – 5), (+ 6^3 – 6), - 16000, 8000, 24000, 6000, ?, 30000, 5000
4000018000120004200030000Option E

The series is, (÷ 2), (* 3), (÷ 4), (* 5), (÷ 6) - 24, 28, 36, 52, 84, ?
240148120124168Option B

The series is, (+ 4), (+ 8), (+ 12), (+ 32), (+ 64),