1). Ratio of speed of boat down stream and speed of up stream is 9:3, speed of current is 3 km per hr, find distance travelled upstream in 5 hours.
2). Sum of 4 consecutive even nos are greater than three consecutive odd nos by 81. If sum of lost odd and even number is 59, then find the difference between largest odd and even number.
3). Average age of A and B, 2 years ago was 26. If age of A 5 years hence is 40 yrs, and B is 5 year younger to C, then find difference between age of A and C?
4). Average of X, Y, Z is 24, X:Y = 2:3, X+Y = 60, then find X-Z=?
5.). Cost price of two articles is same, trade man got profit of 40% on first article, selling price of second article is 25% less than first article, then find over all profit percent.
6). Length of rectangle is 80% of diagonal of square of area 1225, then find area of rectangle if it’s perimeter is 94√2.
7). A can do a work in 24 days, B is 20% more efficient than A, if C can do the work in 10 more days than B, find days taken by A and C together to complete the work.
8). The ratio of Milk to water is 5:4, if two litres of water is added, ratio becomes 10:9, then find new amount of water in the mixture.
ANSWERS
- 15 KM
- 17
- 9yrs
- 12
- 22.5%
- 1968
- 40/3 Days
- 10:9
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