Mallory makes $10 per hour babysitting and $8 per hour working at the local grocery store. last week she babysat for 6 hours. her total gross earnings for both jobs was $180. how many hours did she work at the grocery store?

show us the picture

step-by-step explanation:

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the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b