Mathematical Reasoning
Sponsor Area
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%
Sponsor Area
A and B are standing at a place 'P'. They start moving in the opposite directions at the speed of 5 Kmph and 4 Kmph respectively. What will be the distance between them after 3 hours
3 kms
21 kms
18 kms
27 kms
D.
27 kms
Required distance = 3x (5 +4)
= 3 x 9
= 27 km
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
C.
70
Man plants trees in 1 hour = 10
A man takes rest for 30 min.
So, the man plants 10 trees in 1 hour 30 min
Man will plant trees in (1.5 x 6) = 9 = 6 x 10 = 60
therefore, man will plant trees in 10 hours = 60+10 = 70
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%
B.
10%
Required percentage,
Anil is as much younger to Vivek as he is older to Tarun. If the total of the ages of Vivek and Tarun is 48 years, how old is Anil?
26
33
24
18
C.
24
Suppose, Anil (A) is x years younger to vivek (V)
Now,
A = V -x
A = T +x
A + A = V-x+T+x
2A = V +T = 48
A = 48/2 = 24 years
Sponsor Area
Mock Test Series
Mock Test Series