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Liza earned some money by taking care of her neighbors pet. she bought a drink for $1.95 and a concert ticket for $30. she bought a ring for $7.20 and then two-thirds of the remaining money on a wireless speaker. if liza has 38.50 left, write and solve an equation to find the amount of money m liza earned by taking care of her neighbors pet.

Answer :

The equation is 1.95+30+7.20+2/3(m-1.95-30-7.20)+38.50=m

The amount of money  Liza earned is $154.65

What is Unitary method?

It is a method where we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.

let the money she earn be m.

the remaining money = m-1.95-30-7.20

So, her total earning is,

1.95+30+7.20+2/3(m-1.95-30-7.20)+38.50=m

39.15+38.50+2/3(m-39.15)=m

77.65+2m/3-26.10=m

77.65-26.10=m-2m/3

51.55=(3m-2m)/3

51.55*3=m

m=$154.65

Learn more about this concept here:

https://brainly.com/question/28438183

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