Question

Marta's jump rope is 10 inches shorter than three times the length of dilbert's rope. if both of their ropes laid together end-to-end measure 120 inches long, how long is Marta's jump rope

Answer 1

x = 75

Marta's jump rope is 75 inches long

Explanation:

Hello!! This is how you solve it:

x + ( x - 10 x 3 ) = 120

2x - 10 x 3 = 120

2x - 30 = 120

+ 30. + 30

2x = 150

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2. 2

x = 75