Question
A boat moves 25km upstream and 39km downstream in 8
hours. It travels 35km upstream and 52km downstream in 11 hours. What is the speed of the stream if it travels at a uniform speed?Solution
Let the speed of boat in still water =B and speed of stream =S then – ATQ- 
Solving (4)-(3) B-S=5km/h B+S=13km/h  Speed of Stream (S)=13-5/2=4km/h
What is the difference between total number of items sold by shop C and number of laptops sold by shop A?
Find the ratio of number of mobile phones sold by shopkeeper C to that by shopkeeper E.
Find the difference between the average number of yoga class students from institutes A, B and C and the average number of swimming class students from ...
What is the difference between the total number of leather bags sold by shop A and that by shop C?
In school D, total number of children who didn’t used any of the stationary items are 115 and the ratio of girls who used the stationary items to that...
Total number of smart watch manufactured by Fire-Boltt in June is approximately what percent more/less than the total number of smart watch manufactured...
Find the respective ratio of the number of bags sold by shop A on Wednesday and Monday together and the number of bags sold by shop C on Friday and Satu...
On April, if 5% of total cars available for sell remain unsold, then find the ratio of total number of cars available for sell on August to that on April.
Total functions organized in Hall A during April and May together is what percent of total functions organized in Hall C during May and June.
What is the difference between the average number of students of school A and B together and the average number of teachers of school C and D together?
