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Sadie finished her math test in sixteen minutes less than three times the amount of time it took her friend Laura to finish. If their combined time was 1 hour and 8 minutes (68 minutes), how long did Sadie take?

Respuesta :

jorel1380

Answer:

47 minutes

Step-by-step explanation:

Let k be the amount of time Laura took.

Then Sadie would be 3k-16. So

k+3k-16=68

4k=84

k=21 minutes for Laura

Sadie=3(21)-16=47 minutes ......

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