CHALLENGE FOR ALL !!!!
Hi ! Please give answers to the following questions with explanations ?? Will be really helpful for me.
1.)55 men can finish a piece of work in 42 days.How many additional men require to complete the work 9days sooner ?
2.)A man drives 5 km in 10 minutes, what is his speed in km per hour .
3.)In a school in which 40% of the enrolled students are boys, 80% of the boys are present on a certain day. If 1152 boys are present, the total school enrollment is ?
4.)A worker is paid Rs.15 per hour for an eight hour day,and Rs=20 for each additional hour. If the worker received Rs=200 for a day, How long he worked that day ??
5.)A train 270 meters long is moving at a speed of 25km/hr. It will cross a man coming from opposite direction at a speed of 2 km per hour in how much seconds ??
6.)The average weight of three boys is 53 kg. No one of these boys is less than 51 kg. What is the maximum weight of any one boy ??
7.)In a mixture of 35 litres the ratio of milk and water is 41. If 7 litres of water is added to the mixture, then the ratio of milk and water in the resulting mixture will become ???
8.)The salary of an employee is as follows Basic salary=100,000 Rs , Allowances=60,000 Rs . Find the Gross Salary ??
9.)A Jacket cost Rs=1700. To make the desired of profit, 60 % Markup on cost is needed. What is the selling price ??
10.)A diagonal of a rectangle is twice as long as one of the shorter side (vertical side),what is the angle that the diagonal makes with the longer side ???
11.)Anwar was 40 when his son was born. How old was Anwar when he was 5 times as old as Aslam ??
12.)The length of each side of a square is 3 more than the length of each side of rectangular pentagon.If the perimeters of the square and pentagon are equal, how long is each side of the pentagon ??
13.) What is the volume of a cube whose surface is 54 ?
14)What is the equation of line whose xintercept and y intercept are each 3 ??
15)A ladder is leaning against a wall,forming angle of 65 degree with the floor. If the foot of the ladder is 8 feet from the wall,what is the length of the ladder ??
16)The number of Bacteria in a culture increases by 20 % every 20 minutes. If there are 1000 bacteria present at noon on a given day, to the nearest thousand, how many will be present at the midnight of the same day ??
