Answer:
477,900
Step-by-step explanation:
So to find the number of dollars per lawn, we divide the number of lawns by the number of monies each got so
taryn mowed 9 and got 112.5 so 112.5/9= how much per lawn=12.5 per lawn
taryn charges <u>12.5 per</u> lawn
alistair mowed 7 lawns and got 122.5 so 122.5/7= how much per lawn=17.5 per lawn
alistair charges <u>17.5</u> per lawn
so taryn mowed 9 lawns in 7.5 hours and got 112.5 or 112.5 per 7.5 hours
to find how much per hour you divide 112.5 by 7.5 and get 15 dollars per hour
t=15 per hour
so we want to find out how many more hours t has to work to earn 735 more we just divide 735 by the rate (15) and find the number of hours so 735/15=49
t has to work <u>49</u> more hours to earn 735 more
Alistar=5 hours and 122.5 so 122.5/5=how much per hour=24.5
a=24.5 per hour
so we divide 735 by the rate (24.5) and get the number of hours
735/24.5=30
a has to work <u>30</u> more hours to earn 735 more
how much
Step-by-step explanation:
1/a = 1/b + 1/c
Multiply both sides by a.
1 = a/b + a/c
Multiply both sides by b.
b = a + ab/c
Multiply both sides by c.
bc = ac + ab
Subtract ab from both sides.
bc − ab = ac
Factor b.
b (c − a) = ac
Divide both sides by c − a.
b = ac / (c − a)
