For the following questions answer them individually
P and Q can do a piece of work in 40 days. Q and R can do it in 120 days. Q alone could finish it in 180 days. In how many days will P and R working together finish the work?
A train takes 2 hours less for a journey of 300 km by increasing its speed by 5 km/h. What is its normal speed?
Anitha walked 100 m from point A and turned right to cover 45 m. Again she turned right and walked 100 m to reach point B. What is the distance between the point A and B?
The difference between Simple Interest and Compound Interest for 2 years on a certain sum at the rate of 4% per annum is Rs.8. Find the sum.
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