Multiple Choice QuestionsSome equations have been solved on the basis of the certain system. Find the correct answer for the unsolved equation on the basis.
If,
98-39-27 =31
87-38-34 = 20
then,
79-25-12=?
51
22
42
15
A man is engaged for planting trees for 10 hours. He plants 10 trees in an hour. He Takes rest for 30 min after every hour. How many trees does he plant in 10 hours.
100
50
70
45
The sum of ages of 4 children born at intervals of 4 years each is 60. What is the age of the youngest child?
7 years
9 Years
10 years
12 Years
From the given alternative words, select the word which cannot be formed using the letters of the given word:
ENVIRONMENT
OINTMENT
MENTOR
VENOM
TRIM
A person while buying a dress on sale spends Rs. 45/- and saves Rs 5/-, what is the percentage of his savings?
5%
10%
15%
20%
2 litre of pure alcohol is added to 6 litre, 40% alcohol solution. The percentage of water in the solution is:
65%
45%
55%
60%
B.
45%
Amount of alcohol in 6 litres of solution
Amount of water in 6 litres of solution
=6 - 2.4 = 3.6 litre
Now, the added amount of alcohol in 6 litres solution is 2 thus, amount of alcohol in 8 litres of solution = 2.4+2 = 4.4
Amount of water in 8 litres of solution = 3.6 litre
therefore, % of water in the solution = 
= 45%
The distance between two cities is 30 Km. A man goes at a speed of 30 Km per hour and returns at 20 Km per hour. What is his average speed
25
24
10
26
Notebooks of a class were corrected with ink pen while 22 notebooks were corrected with colour pencil. If 4 notebooks were corrected with both, what is the strength of class?
30
32
28
25
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