Problem is this: Rosita can wax her car in 2 hours. Whenshe works together with

Question

Problem is this: Rosita can wax her car in 2 hours. Whenshe works together with Helga, they can wax the car in 45minutes. How long would it take Helga working by herself towax the car. The equation i came up with is 1/120(representing rosita'stime) + 1/H(representing Helga's time)=45 but I am thinking that 1:I am way off with this equation and 2: Can't figure out a way tosolve it......Please help! Problem is this: Rosita can wax her car in 2 hours. Whenshe works together with Helga, they can wax the car in 45minutes. How long would it take Helga working by herself towax the car. The equation i came up with is 1/120(representing rosita'stime) + 1/H(representing Helga's time)=45 but I am thinking that 1:I am way off with this equation and 2: Can't figure out a way tosolve it......Please help!

Explanation / Answer

1/120+1/H=45 H+120=5400H -5399H=-120 H=120/5399 H= 0.02

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