11 .
Income of a company doubles after every one year. If the initial income was Rs. 4 lacs,
What would be the income after 5 years ?
A.Rs. 1.24 crores
B. Rs. 1.28 crores
C. Rs. 2.52 crores
D.Rs. 2.56 crores
E.Rs. 3.73 crores
View AnswerAns: Rs. 1.28 crores
12 .
Ratio of earnings of A and B is 4:7. If the earnings of A increase by 50% and those of B decrease by 25%, the new ratio of their earnings becomes 8:7. What is $A{'}s$ earning ?
A.Rs. 21000
B. Rs. 26000
C. Rs. 28000
D.Rs. 33000
E.Data inadequate
View AnswerAns: Data inadequate
13 .
A and B can do a piece of work in 45 days and 40 days respectively.
They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was :
B. 8
C. 9
View AnswerAns: 9
14 .
The speed of a car increases by 2 kms after every one hour.
If the distance travelled in the first one hour was 35 kms,
What was the total distance travelled in 12 hours ?
A.456 kms
B. 482 kms
C. 552 kms
D.556 kms
E.672 kms
View AnswerAns: 552 kms
15 .
A train covers a distance of 12 km in 10 minutes. If it takes 6 seconds to pass a telegraph post,
then the length of the train is :
A.90 m
B. 100 m
C. 120 m
D.140 m
E.160 m
View AnswerAns: 120 m