Question

the marks in their test decreased from 40 to 30 the percent decrease is how much​

Answer 1

t he percent decreased is 10%

Answer 2

Answer:

10%

Step-by-step explanation:

Assuming the marks are out of 100,

the marks in the test decreased from 40 to 30

Therefore, 40 is equal to 40/100×100 (40% of 100)

and 30 is equal to 30/100×100 (30% of 100)

And hence the percent decrease is

(40-30)%

10%