10. The ratio of the length of a school ground to its width is 5: 2. F

1.	10. The ratio of the length of a school ground to its width is 5: 2. Find its length if the width is 40 metres.
Answer» Given The RATIO of the length of a school GROUND to its width is 5: 2. Width of the ground = 40 m To find Length of the ground. Solution Let the ratio be X. Then $\sf\pink{⟶}$ Length = 5x $\sf\pink{⟶}$ Width = 2x But width of the ground is 40 metres. Therefore, $\tt:\implies{40 = 2x}$ ⠀ $\tt:\implies{x = \dfrac{40}{2}}$ ⠀ $\tt:\implies{x = 20}$ ⠀ $\sf\pink{⟶}$ By PUTTING the value of x we will find the length of the school ground. ⠀ $\tt:\implies{Length = 5x}$ ⠀ $\tt:\implies{Length = 5 \times 20}$ ⠀ $\tt:\implies{Length = 100m}$ ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬