Two car washers lydia and jackie are working on your car . lydia takes 2 hours while jackie takes 1 if they both work together how many hours do the car washers take if they work together? 1/2, 3/2, 2/3, 4/3.

Lydia washes 1/2 car in 1 hour. Jackie washes 1/1 car in 1 hour.

1/2 + 1/1 = 1/2 + 2/2 = 3/2

They both washes 3/2 cars in 1 hour and so they washes the car in 2/3 of an hour. 2/3 hour = 40 minutes

Step-by-step explanation: 2/3

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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the answer is the third / last answer

step-by-step explanation: