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# Placement Questions & Answers :: TCS

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Not Attempted

151. If 28a + 30b+ 31c=365, find the value of a+b+c, if a, b, and c are natural numbers.

Explanation:

Here is no explanation for this answer

Tags: TCS

Not Attempted

152. P is thirty percentage of Q, Q is twenty percentage of N. M is fifty percentage of N, Find the value of P/N.

Explanation:

P=(30/100)of Q
P=(30/100)*(20/100)of M
p=(30/100)*(20/100)*(50/100)of N
=>p=(30/100)*(20/100)*(50/100)*N
=>P/N=3/100

Tags: TCS

Not Attempted

153. If twenty four men and sixteen women work on a day, the total wages to be paid is 11,600. If twelve men and thirty seven women work on a day, the total wages to be paid remains the same. What is the wages paid to a man for a day's work?

Explanation:

Lets assume man daily wages and woman daily wages be M and W respectively
24M+16W=11600 ---------(1)
12M+37W=11600 ---------(2)
By solving above eq. (1) and (2)
M=350 and W=200

Tags: TCS

Not Attempted

154. A takes 2 hours to make a publication. B takes 10 hours to make a publication. Find the time taken by them to make two publications, working independently.

Explanation:

A completes one publication ====> 12 hours
B completes one publication ====> 10 hours
So, the maximum time taken to complete these two publications is 12 hour.

Tags: TCS

Not Attempted

155. There are 60 slots around a circle, numbered 1 to 60. A man starts from the first slot and jumps to the 5th slot. From there he jumps to the 9th slot and so on. In which slot will he land in his 2200th jump?

Explanation:

At each jump it moves 4 slot.
So, total jump * 4 will give at which slot he is i.e. 2200 * 4 = 8800
but given that. there are 60 slots around a circle
so take mod 60
8800 mod 60 = 40
but mod gives and between 0 to 59...but actual slot number are from 1 to 60 hence +1 ans
hence final answer is 40 +1 = 41

Tags: TCS

Not Attempted

156. If all the numbers between 11 and 100 are written on a piece of paper. How many times will the number 4 be used?

Explanation:

There are total 9 4's in 14, 24, 34...,94
& total 10 4's in 40,41,42....49
thus, 9+10=19.

Tags: TCS

Not Attempted

157. In a school, sixty percent of the students are girls and thirty five percent of the girls are poor. If a student is randomly selected, what is the probability of selecting a poor girl student?

Explanation:

Lets assume 100 be the total strength
60% out of 100= 60 number of girls
now 35% of girls are poor i.e. (35/100)*60 =21
Therefore probability of selecting a poor girl out of 21 poor girls is 21 c 1=21

Tags: TCS

Not Attempted

158. Two beakers are on the table. The capacity of the first beaker is x liters and that of the second beaker is 2x liters. Two thirds of the first beaker and one fourth of the second beaker is filled with wine. The remaining space is filled with water. If the content in both the beakers are mixed in a large beaker of volume 3x liters, what is the proportion of wine in the beaker?

Explanation:

capacity of beakers x,2x,3x
2/3(x)+1/4(2x)=7x/6
wine proportion is =7x/(6*3x)=7/18

Tags: TCS

Not Attempted

159. Three non negative numbers, X, Y and Z are such that the mean is M and the median is 5. If M is 10 more than the smallest number and 15 less than the biggest number, find the value of X+Y+Z.

Explanation:

Given median=5,so y=5
x+y+z/3=10+z ---(1)
x+y+z/3=x-15 ---- (2)
By solving eq. (1) and (2) we get,
x=25,y=5,z=0
so x+y+z=30

Tags: TCS

Not Attempted

160. From 5 men and 11 women, in how many ways can a panel of 11 be formed such that the number of men is not more than 3?