Sadie finished her math test in sixteen minutes less than three times the amount of times it took her friend laura to finish. if their combined times was 1 hour and 8 minutes, how long did it take sadie?

Sadie took 47 minutes to finish her test.

Step-by-step explanation:

Let Laura's time be x minutes.

Then we have:

x + 3x - 16 = 68

4x = 84

x = 21 minutes.

So Sadie took 3(21) - 16 = 63-16

= 47 minutes.

you have 6 cupcakes

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation: