Charley spends all of his income on soft drinks and pizza. suppose he is currently buying these products in amounts such that his marginal benefit from an additional soft drink is $ 70 and his marginal benefit from an additional slice of pizza is $ 90.

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

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step-by-step explanation:

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step-by-step explanation:

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