arithmetic Questions

A man can row a boat at 10km/h in still water. If the speed of the stream is 7km/h, what is the time taken to row a distance of 85km down the stream?

6 men earn as much as 7 women, 2 women earn as much as 3 boys, 4 boys earn as much as 5 girls. If 5 girls earn Rs. 400 a week, how much does a man earn in a week?

The bodyweight of eight members of a club is recorded as 69kg, 63kg, 72kg, 76kg, 82kg, 93kg, 59kg, and 55kg. What is the average body weight of all the eight members?

On selling 2800 school bags, Anita earns a profit equal to the sale price of 420 school bags. What is the gain percentage that Anita earned?
Note: round off to two decimal places

The third proportional to 7
6
1
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and 11 is:

P and Q can do a piece of work in 36days, Q and R can do it in 60days, and P and R can do it in 45days. When P, Q and R work together, how much work is finished by them in 5days?

Ram buys 13 balls for Rs. 390 and sells them at the rate of Rs. 33 per ball. Find his gain percentage.

A person covers a distance of 40km by bus in 70mins. After deboarding the bus, he took a rest for 40mins and covered another 20km by taxi in 40mins. Find his average speed for the whole journey.

A bus covers the first 80km at a speed of 40km/h. It covers the next 100km at a speed of 50km/h. What is its average speed?

At a college NSS camp, there is food provisions for 320 students for 38days. If 60 more students join the NSS camp on the first day itself, then for how many days will the provisions last?

Which least number should be subtracted from 5825 to make it a perfect square?

A man invested a total of Rs. 16,50,000 in the names of his two daughters aged 15 years and 17 years, respectively, such that they get equal amounts when they are 20 years old. If the rate of interest is 25% per annum, compounded annually, then how much money (in Rs., to the nearest tens) should be deposited in the name of his younger daughter?

If the selling price of 10 chairs is the same as the cost price of 8 chairs, find the loss percentage.

Find the simple interest on Rs. 3,500 at 10% p.a. for 7 years.