Problems on Average:
1. In the 1st 20 overs of a cricket game, the run rate was only 4.1. What should be the run rate in the remaining 30 overs to reach the target of 305 runs?
Solution:
Runs in the 1st 20 overs = 4.1*20 = 82
Run rate = (305-82)/30 = 223/30 = 7.43.
2. The average price of 3 items of furniture is 20000. If their prices are in the ratio 1:2:5, the price of the cheapest item:
Solution:
Sum of 3 items = 20000*3 = 80000
x+2x+5x = 80000
8x = 80000
x = 10000 which is the cheapest item.
Comments
Post a Comment