In a one kilometer race Anil, Satish and Sonu are the three participants. Anil can give Satish a start 50 m and Sonu a start of 69 m. How many meters start cab Satish give to Sonu?
OPtion
1) 50 m
2) 45 m
3) 25 m
4) 24 m
5) 20 m
6) 30 m
7) 35 m
8) 22 m
9) 28 m
10) None of the above
Solution
When Anil covers 1000 m, Satish covers
(1000-50)= 950m.
and Sonu covers
(1000-69) = 931m.
When Satish covers 950 m, Sonu covers 931 m.
When Satish will cover 1000 m, Sonu will cover = (931/950) x 1000 = 980 m
Therefor Satish can give Sonu a start of 20m.
Relative speed between Shubham & Vijay = 14- 8
= 6m/s
Vijay lags behind Shubham by 3 seconds at start.
Hence time taken by Vijay to catch Shubham
= Distance covered by Shubham in 3 sec / Relative speed of Vijay
= 8m/s x 3 sec / 6m/s
= 4 seconds
30 Men working 5 hours to load 60 cement bags.
1 man working for 1 hour, number of bag loaded
= 60 / 30 x 5 = 2/5 bags
25 men working for 10 hours, number of bags will be loaded
= 60 x 25 x 10 / 30 x 5
= 100 bags
A Certain sum amounted to Rs. 900 at 5% in a time in which Rs. 750 amounted to Rs. 840 at 4%. If the rate of interest is simple, find the sum (approx.)