For the following questions answer them individually
The average weight of P, Q and R is 47 kg. If the average weight of P and Q be 32.5 kg and that of Q and R be 48.5 kg, then what is the weight of Q (in kgs)?
A shopkeeper by selling 5 items, earns a profit equal to the selling price of 1 item. What is his profit percentage?
To cover a distance of 90 km in 2.5 hours what should be the average speed of the car in meters/second?
If in 3 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs. 25,000 in 3 years at the same rate?
If 5x + 6(3-2x) = 4, then what is the value of x?
If a + b = 1 and ab = -6, then what is the value of $$a^{3} + b^{3}$$ ?
The sum of a non-zero number and twenty times its reciprocal is 9. What is the number?
If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?
What is the reflection of the point (3,-5) in the origin?
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