Question

यदि x,y का 80% है, तो 2x का कितना प्रतिशत Y है ?

Answer 1

Answer:

x is 80% of y

80% of y = 80/100 × y = 4y/5

Thus x = 4y/5

To calculate value of y undertaking cross multiplication

x = 4y/5

4y = 5x

y = 5x/4

Now to calculate what percent of 2x is y

Percent : 2x/100 = 5x/4

Cross multiplication

8x = 100 × 5x

8x = 500x

Percent = 500x/8x

Percent = 500/8

Percent = 62.5%

Answer : 62.5 percent of 2x is y