Question

The ratio between the length and width of a rectangular sheet of paper is 7:5. If the width of the sheet is 20. 5cm, find its length. *​

Answer 1

Answer:

Let the length of the sheet be x

Then the ratio length to width is x:20.5 cm

According to given statement,

x:20.5 cm=7:5

Using cross product rule.

Product of extremes =Product of means

x×5=20.5 cm×7

x×5=143.5 cm

x=28.7 cm

Answer 2

Answer:

28.7cm

Step-by-step explanation:

let

ratio of rectangular sheet of papper 7x and 5x

if the width of sheet be 20.5

then

5x=20.5cm

x=4.1

so

length of rectangular paper sheet be

7x=7×4

=28.7cm

hence the length of the rectangular paper sheet is 28.7