On a trip of 200 miles, a man travels at the rate of 40 miles per hour for the first 100 miles. For the rest of the trip, he travels at the rate of 55 miles per hour . What is his average speed, in miles per hour, for the total trip ?
Three boys have marbles in the ratio of 19:5:3 . If the boy with the least number of marbles has 9 marbles, how many marbles does the boy with the greatest number have ?
Last year I bought 1000 shares of Sunshine Enterprises at TaKa 17.25 per share. Today the stock is quoted at TaKa 17,375. How much profit shall I make by selling all the shares today ?
An item is sold for $65.00, giving the retailer a profit of 30% of the cost . What will be the new retail price if the retailer cuts his profit to 10% of costs ?
A manufacturer finds that 0.4% of his production is defective and unsuitable for marketing . How many to 1000 units produced will be rejected ?
Six consecutive whole numbers are given ; the sum of the first three numbers is 27. What is the sum of the last three numbers ?
The length of rectangle is increased by 20% and the width is decreased by 20% . What is the percentage increase or decrease of the area of the rectangle .
All 120 students in a class play cricket or football or both, 75 play cricket and 60 play football.
In how many ways can a subcommittee of four persons be formed from amongst four women and six men so that one particular man is always included ?
A number is selected at random from 40 to 59 inclusive . What is the probability that the number is prime number ?
A arden is 60m long and 20m wide. Inside the garden there is a 5m wide path around it . The area of the path is in square meter .
A circular flower bed has diameter 4m. The flower bed is increased so that the diameter is now 12m. How many times larger is the new flower bed?
A man binds 112 books in a day , and his assistant work 1/4 as fast . How many days will it take them to bind 560 books, if each alone works on alternate days ?
A train passes city X at 9.55 am and Y city at 10.15 am . The distance between cities X and Y is 45 miles . What is the average speed, in miles per hour of the train ?
A man can cross 10 miles distance of a river in favor of the stream in 2 hours . He can come back against the stream along the same way in 5 hours . What is the average speed, in miles per hour, for the entire trip ?