A class has 40% boys. If 20% of boys and 30% of girls wrote. a paper and in all 52 persons wrote the paper, what is the strength of the class ?
(1) 1250
(2) 200
(3) 400
(4) 250
A is twice as fast as B and B is thrice as fast as C. The jaurney cavered by C in 42 minutes will be covered by A in
1) 7 min:
2) 14 min.
3) 28 min.
4) 35 min.
