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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?

Respuesta :

Answer:

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.

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