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If Rosina charges $40 for babysitting for 5 hours and $48 for babysitting for 6 hours, how long does she babysit for $1?

Respuesta :

texaschic101
$ 40 for 5 hrs.....40/5 = $ 8 per hr

8 / 60 = 1 / x...$ 8 to 60 min = $ 1 to x minutes
cross multiply
8x = 60
x = 60/8
x = 7.5 minutes <==
Jonathank
I think it is 8 minutes. You can use a proportion as follows:

 5         x      (Time)
----  =  ----
40        1      (Money)

Then just solve for x.

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