Answer:
B i am pretty sure
Step-by-step explanation:
Answer:
12 number for theanswer of that question answer
Answer: it would take them 40/13 hours
Step-by-step explanation:
If Naomi were to paint her living room alone, it would take 5 hours. it means that the rate at which she paint her living room alone is 1/5
Her sister Jackie could do the job in 8 hours. it means that the rate at which Jackie paint the living room is 1/8
If they work together, they would work simultaneously and their individual rates are additive. This means that their combined working rate would be
1/5 + 1/8 = (8 + 5)/40 = 13/40
Assuming it takes t hours for both of them to clean the room working together, the working rate per hour would be 1/t. Therefore,
13/40 = 1/t
t = 40/13 hours
Answer:
a) .2 hours per dollar
b) 3 pages per minute
Step-by-step explanation:
a) The hours per dollar means take the hours and divide by the dollars
7 hours/ 35 dollars = 1/5 = .2 hours per dollar
b) pages per minute means take the pages and divide by minute
9 pages/3 minutes = 3 pages per minute
