the marks in their test decreased from 40 to 30 the percent decrease is how much About the author Rose
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% Reply
t he percent decreased is 10%
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%