SOLUTION: (1) A rectangle is three as long as it is wide.if its perimeter is 56cm,find the with of the rectangle. (2)A man walked for 2 hours

Question 1107684: (1) A rectangle is three as long as it is wide.if its perimeter is 56cm,find the with of the rectangle. (2)A man walked for 2 hours at 16km/h.He then cycled for a certain time at 16km/h.if he travelled 36km altogether, for how many hours did he cycle? (3) A sum of 2440 is made up of 100 and 10 notes as there are 10. Find the number of 100 notes. Pls me solve these''

Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
1) L = 3W
2L + 2W = 56
2(3W) + 2W = 56
6W + 2W = 56
8W = 56
W = 7
and L = 3W = 3(7) = 21
--------------------------
Check:
2(21) + 2(7) = 42 + 14 = 56 Correct
--------------------------
you can take the first question off your list and re-upload the others
RELATED QUESTIONS
a rectangle is three times as long as it is wide. write an expression for the perimeter... (answered by stanbon)

A rectangle is three times as long as it is wide. If its perimeter is 48 cm, find its... (answered by stanbon)

A rectangle is twice as long as it is wide. What is the perimeter if its area is 32 cm2? (answered by algebrahouse.com,josgarithmetic)

A rectangle is 2 times as long as it is wide. If the area is 50 square feet, find its... (answered by JBarnum)

A rectangle is 2 times as long as it is wide. If the area is 18 square feet, find its... (answered by John10)

A rectangle is 2 times as long as it is wide. If the area is 32 square feet, find its... (answered by Alan3354)

A rectangle is 2 times as long as it is wide. If the area is 72 square feet, find its... (answered by josgarithmetic)

A rectangle is three times as long as it is wide. The perimeter of the rectangle is 147 (answered by josgarithmetic)

A rectangle is three times as long as it is wide. The perimeter is 40 feet. Find the... (answered by JimboP1977,ankor@dixie-net.com)