6 days 7 ½ days 8 days 8 ½ days

First pipe can fill a tank in 12 Second pipe can fill the same tank in 6 hours. Third pipe …

79.48 81.32 76.54 78.4

2 : 1 1: 2 1 : 1                                                      1: 4

16 : 21 27 : 28 6 : 9 1: 2

37½% 60% 75% 120%    

25 ½ years 10 ½ years 8 ½years 12 ½ years  

27 cm 9√3 cm 9 cm 4.5 cm  

0 -1 2 1  

16, 32 years 15, 30 years 20, 40 years 17, 34 years

950 970 992 1000

A sum of Rs. 1,550 was lent partly at 5% and partly at 8% per annum at simple interet. The …

3 : 2 : 1 3 : 1: 2 1:2 : 3 1: 3 : 2