TCS Company Numerical Ability Time and Work

There are 3 trucks A,B and C. A loads at the rate of 10kg/min and B loads at the rate of 13 1/3 kg/min. C unloads at the rate of 5kg/min. If all the 3 trucks are acting simultaneously, find the time taken to load 2.4 tonnes

Read Solution (Total 7)

TCS Other Question
When all possible six-letter arrangements of the letters of the word "MASTER" are sorted in alphabetical order, what will be the 49th word? Tcs questions I remembered...

1) A drinks machine offers three solutions Tea, Coffee or Random but the machine has been wired up wrongly so that each button does not give what it claims. If each drink costs Rs.50, what is the minimum amount of money that must be spent to determine with certainity the correct labeling of the buttons?
Options
a)Rs. 100
b)Can not be determined from the given information
c)Rs 150
d)Rs 50
My ans : d)Rs 50

2)G and m can paint 720 box in 20 days,m and h in 24 days and h and g in 15 days. g works for 4 days, m for 8 days, h for 8 days. find total no of boxes painted by them?
My ans : 348 boxes


3)An equilateral triangle and a regular hexagon have equal parameters then what is the ration of their areas?
option
a) 6:1
b) 1:6
c) 3:2
d) 2:3
My ans : b)1:6

4) A & B completed a work together in 5 days. A worked at twice the speed and B at half the speed it would have taken then 4 days to complete the job. How much time would it take for A alone to do the work
option
a) 25
b) 10
c) 20
d) 15
My ans : b)10

5) There is a circle with 2 triangles inscribed in it. in opposite direction making a star. The triangle is equilateral of side 12. You have to tell the area of the remaining portion of the circle
My ans : 68

6) You are given 87 matchsticks. They are arranged in rectangular manner.Find the number of triangles formed?
My ans : 43

7) man sold 12 candies in 10$ had loss of a% then again sold 12 candies at 12$ had profit of a% find the value of a
My ans : 100/11

8) Sum of three digit number is 17. sum of squared of digits of the given number is 109. If we subtract 495 from that number we will get a number written in square order. find the numnber.
My ans : 863

9) At the end of 1994 Rohit was half as old as his grandmother. The sum of the years in which they were born is 3844. How old Rohit was at the end of 1999?
option
(a) 48
(b) 55
(c) 49
(d) 53
My ans : d)53

10) In a office, at various times during the day the boss gives the secretary a letter to type, each time putting the letter on the top of the pile in the secretary inbox. When there is time, the secretary takes the top letter off the pile and types it. If there are five letter in all , and the boss delivers in the order of 1 2 3 4 5, which of the following could NOT be the order in which secretary types them.
option
(a) 2 4 3 5 1
(b) 4 5 2 3 1
(c) 3 2 4 1 5
(d) 1 2 3 4 5
(This is star mark question)
My ans : b)4 5 2 3 1

11) For which of the following is the number 2^74 + 2^2058 + 2^2 a perfect square?
(a) 2012
(b) 2100
(c) 2011
(d) 2010
Ans : 2020
(This is star mark question which is a Dummy bit(don't submit any ans for this question)

12) 2 workers ,one old and one young,live together and work at the same office.the old man takes 30 mins where as the young man takes only 20 mins to reach the office. When will the young man catch up the old man, if the old man starts at 10.00am and the young man starts at 10.05am?
My ans : 10:15 am

13) How many team we can making group of 11 there are 11 women and 5 men and at most there are 3 men should be in team ?
My ans : 2256

14) Volume given 6*5*2 height constant volume decrease by 19% so what is new breadth if l, b decrease in equal percentages.
My ans : 4.5

15) A and B working separately can do a piece of work in 7 and 9 days respectively.Together they can do it how many days(choose nearest value)?
option
a)4
b)3
c)5
d)6
My ans : a) 4

16) There are 250 men and 150 women in a committee, if all will work they will complete 12 units per day, if all men work they will complete 15 units per day, how many units will women complete per day?
My ans : 7 units

17) Georage completed 3/5th of work in 9 days with the help of Paul he completes remaining work in 4 days. In how many days Paul alone can finish the work?
My ans : 30 days

18) A survey of n people in the town of Badaville found that 50% of them prefer brand A. Another survey of a 100 people in the town of Chottaville found that 60% prefer brand A. In total 55% of all the people surveyed together prefer Brand A. What is the total number of
people surveyed?
My ans : 200

19) Of set of 30 nos, average of 1st 10 nos=avg of last 20 nos. The sum of last 20 nos is
option
a)sum of 1st ten nos
b)cant be determined
c)2*sum of first ten numbers
d)2*sum of last ten nos
My ans : c


20) If Suraj's sum of the salaries of 2003, 2004, 2005 is $36400 and the salary gets incremented 20% every year then find the salary drawn by Suraj in the year 2005?
option
a)10000
b)12000
c)24000
d)8000
(Dummy bit)
My ans : 14400