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2 years ago

Jack spends 1 1/2 times as long on his homework as Jill.

Mathematics

2 answers:

Mashcka [7]2 years ago

6 0

Answer:

12 3/4

Step-by-step explanation:

8.5 times 1 is 8.5

and 8.5 times .5 is 4.25

so 8.5 plus 4.25 is 12.75 or 12 3/4

Minchanka [31]2 years ago

4 0

Answer:

12 3/4 hours

Step-by-step explanation:

Jack spends 1 1/2 times as long on his homework as Jill .

Jill spends 8 1/2 in doing his home work .

Time spent by jack in doing his homework is jacks time multiplied by Jill’s

That’s

1 1/2 x 8 1/2

Change to improper fractions.

We have,

3/2 x 17/2

Multiply through

51/4 = 12 3/4

Jack spends 12 3/4 hours in doing his homework

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