Sana can type a script in 10 hours. Kiran can type the same script in 5 hours. If they type this script together, it can be completed in:
2hrs
3hrs
3hrs and 20min
3hrrs and 43mins
2.
Nazir can wash a car in 15 minutes while his son takes twice as long to do the same job. If they work together, in how many minutes the job will be completed?
5
15
10
20
3.
How many ounces of pure acid must be added to 20 ounces of a solution that is 5% acid to strengthen it to a solution which is 24% acid?
5
33
23
22
4.
The average age of class of 20 boys is 14.95 years. The average age of class is raised to 15 years by the coming of new boy. How old this boy is?
14 years
19 years
13 years
16 years
5.
If 9 men need 15 days to complete the task, how many days would it take to complete this task if 3 additional men were employed
11*1/4
45
37
21
6.
What per cent is 250 gm of 1 kg?
25%
50%
60%
100%
7.
The population of a town increases at the rate of 5% yearly. The present population is 9261. Find population three years ago:
8000
300
800
3000
8.
The price of sugar having risen 60% how much per cent must a house holder reduce his consumption of sugar so as not to increase his expenditure:
20%
37.5%
165
13%
9.
If the volume of the cube is 64 cubic inches, the sum of the edge is:
24 inches
48 inches
32 inches
none
10.
What ill be the angle formed by the hands of a clock at 2:30