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Question 1
In a group of 10 people, when a person left and a new one of age 25 years joined the group, the average age of the group is decreased by 3 years. What was the age of the person who left?
Question 2
A man had 7 children. When their average age was 12, a child aged 6 years died. The average age of the remaining six children is:
Question 3
In a village 30% of the population is literate. If the total population of the village is 6,600, then the number of illiterate is
Question 4
Which of the following is correct?
Question 5
A motor boat can travel at 10km/h in still water. It travelled 91 km downstream in a river and then returned, taking altogether 20 hours. Find the rate of flow of river.
Question 6
In a share of profit, A got 3/5 of the total profit earned and the remaining profit was divided equally between B and C . If A got Rs. 400 more than B, then the total profit was:
Question 7
A boat goes downstream in one third the time it takes to go upstream. Then, the ratio between the speed of boat in still water and that of the stream is
Question 8
A train 200 m long running at 36 kmph takes 55 seconds to cross a bridge. The length of the bridge is
Question 9
A man purchased a T.V and sold it at 5% loss. Had he sold it for Rs. 600 more, he would have gained 10 %. At what price had he purchased the T.V?
Question 10
The captain of a famous club cricket team of eleven members is 26 yr old and the wicket keeper is 3 yr older than his captain. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team?
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Oct 5CDS & Defence
