1 .- A man rowing down the river 10 km in one hour and 4 km upstream in an hour. Find the normal speed of the boat and the current velocity.
2.-A boat moves 28 km in 1 hour and three quarters and 24 km downstream in 3 hours upriver. Find the speed of the boat in still water and river velocity.
3 .- A boat used 5 hours to travel 24 miles downstream and back. To travel 3 km downstream providers use the same time to travel 2 km upstream. Find the time taken to go and the employee to return.
4.-The perimeter of a rectangular room is 18 m, and 4 times long equvale to 5 times the width. Find the dimensions of the room.
5. Ana has double the amount you Brenda. If Anna gives Brenda 12 pesos, both have the same thing. How is everyone?
6.-The sum of two-digit number is 6, and if the number is subtracted from 36, the figures are reversed. Find the number.
7.-A bird flying downwind runs 55 km in one hour, and against the wind 25 km per hour. Find the speed of the bird and wind.
8.-7 kilos of coffee and tea are $ 6, 480, 9 kilos of tea and coffee cost $ 8 645. How much does a kilo of each product?
9.-A ninth Ana's age exceeds 2 years to one fifth of the age of Brenda, and twice the age equivalent Brenda age that Ana had 15 years ago. Find the present age.
10.-The perimeter of a rectangle is 58. If the length is increased by 2 m and the width is decreased by 2 m, the area is decreased by 46 m square. Find the dimensions of the rectangle.
