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3 years ago

1 hour job costs $90 A 3 hour job costs $210 What is the initial amount and hourly rate

Mathematics

1 answer:

LekaFEV [45]3 years ago

3 0

Step-by-step explanation:

i+h=90

i+3h=210

so 2h=210-90=120

h=60

and i=90-60=30

so initial amount is $30 and hourly rate is $60

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2 years ago

If a = 12 and 120% of a is equal to 80\% of bthen what is a + b ?

Novosadov [1.4K]

Answer:

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Step-by-step explanation:

First you have to find 120% of a (12).

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