Debbie used 40% of her flour for cookies. She started with 24 cups; how many cups did Debbie use? A 150%
B 80%
C 9.6
D 84%​

C. 9.6

Step-by-step explanation:

This can be solved by multiplying 40% and 24. When multiplying with a percent, you have to convert it to a decimal. 40% as a decimal is 0.40. Therefore, you have to do 24 x 0.40.

24 x 0.40 = 9.6

c.

Step-by-step explanation:

the other answers don't make any sense

24 x 40% = 9.6

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

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