Question

PLEASEEEEEE ANSWEERRRRRRRRR

Sally and Joan were able to dust the house in 3 hours together. It takes

Joan 10 hours to finish the same job alone. Without help, how long

would it take Sally to finish the same job ?

Answer 1

Answer:14hrs

Step-by-step explanation:joan=10hrs

joan+sally=3hrs

representing joan and sally's time taken in fractions 1/10+-------=1/3

1/3-1/10=7/30

7/30 by 60min(in an hour)

=14hrs