Exams

At 6% simple interest per annum a sum of money became Rs. 834 in 6.5 years. The sum initially invested was

Rathin is now 16 years old while his cousin is 7 years. After how many years will Ratin's age be 1.5 times that of his cousin?

If 192 pens cost is Rs.10, how many pens can be bought for Rs.5?

An army recruit is training. He starts and runs 2 km East, then 3 km South, then 5.5 km West, then 4 km North, then 3.5 km East, where is he now with reference to the starting position?

The angles of depression of two ships from the top of a light house are 45° and 30° toward east. If the ships are 200m apart, the height of the light house is (take √3=1.73)

If one angle of a triangle is equal to half the sum of the other two equal angles, then the triangle is

Read the following statements and the conclusions that follow. Decide which of the two conclusions follow from the given statements.

Statements:
• All swans are parrots.
• No parrot is a cuckoo.

Conclusions:
1. No swan is a cuckoo.
2. All parrots are swans.

The mean of marks secured by 35 students in division A of class X is 65, 45 students of division B is 61 and that of 70 students of division C is 59. What is the mean of marks of the students of three divisions of Class X?