For the following questions answer them individually
P gets 360 marks out of a total score of 500. Marks of P are 10% less than Q's score. Q got 25% more than R, and R got 20% less than S. What is the percentage marks of S?
From a picnic arranged for 10 persons, 2 opted out. The expenses had to be equally shared by them. What is the percentage increase in the expenses of each person after the two left?
P and Q run along a circular track in 4 minutes and 7 minutes respectively. They start from the same point at the same time. When Q has completed 12 rounds, how many times will they meet if (i) they run in the same direction and (ii) in the opposite direction respectively?
A sum of money at Simple Interest amounts to Rs.2800 in 2 years and Rs.3250 in 5 years. Findthe sum and the rate of interest.