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

Question

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

Eliza · Answer

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%

Emery · Answer

t he  percent decreased is 10%

Rose

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