By himself, a person can mow his lawn in 24 minutes. if his daughter , they can mow the lawn together in 20 minutes. how long would it take his daughter to mow the lawn by herself?

It would take 120 minutes to mow the lawn by herself.

Step-by-step explanation:

The person's rate is .

The dauther's rate is .

The combined rate is .

So, as this the same lawn if we use the formula for combined rates we can get the answer

Person's Rate × Combined time + Daugther's Rate × Combined time =1

We have to multiply all the equation by 24t:

20t+480=24t

t=120 minutes

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4