Question

The length of a rope is reduced from 150 m to 131.25 m.Find the decrease per cent in the length of a rope.​

Answer 1

Step-by-step explanation:

131.25 × 100 == 87.5%

150

Answer 2

Given :

• Total Length of Rope = 150m
• Length of the Rope is reduced from 150m to 131.25m

To Find :

• Decrease%

Solution :

✰ In this question, Total Length of Rope is 150m and it is reduced to 131.25m and we have to find the Decrease%. So firstly we will find the net decrease in the rope after that we will apply the formula of Decrease% i.e Decrease% = Net Decrease/Total Length × 100 .

⠀

⟶⠀Decrease = Total - Reduced Length

⟶⠀Decrease = 150 - 131.25

⟶⠀Decrease = 18.75m

⠀

___________________

⟶⠀Decrease% = Decrease/Total × 100

⟶⠀Decrease% = 18.75/150 × 100

⟶⠀Decrease% = 18.75/15 × 10

⟶⠀Decrease% = 18.75/3 × 2

⟶⠀Decrease% = 18.75 × 2/3

⟶⠀Decrease% = 37.5/3

⟶⠀Decrease% = 12.5%

⠀

So, Decrease% in the Rope is 12.5%

___________________