The
rate of earning money for both activities will be calculated by dividing the
amount earned by the total time spent for each of the activity.
Babysitting:
rate = ($30 / 5 hours ) = $6 / hour
Doing
chores: rate = ($28 / 4 hours) = $7 / hour
Thus, Holly is able to earn money faster when doing the
chores compared to when she do the babysitting if she work for the same amount
of time for each.
Answer:
c =4 4/9 minutes
Step-by-step explanation:
The formula is
1/a + 1/b = 1/c where a and b is the time for each working alone and c is the time working together
1/8 + 1/10 = 1/c
Multiply by 40c to clear the fractions ( 40c is the least common multiple)
40c(1/8 + 1/10 = 1/c)
5c + 4c = 40)
9c = 40
Divide by 9
9c/9 = 40/9
c =4 4/9 minutes
Star = 5
square =3
or the other way around
Answer: I think it's 2
Step-by-step explanation: i am not dat good at math
