I would like to use cents
p+n+d=16
1p+5n+10d=122
twice as many nicklese a pennies, n=2p
sub 2p for n
p+2p+d=16
1p+5(2p)+10d=122
simplified
3p+d=16
1p+10p+10d=122
3p+d=16
11p+10d=122
now solve
use subsitution
3p+d=16
minus 3p from both sides
d=16-3p
sub 16-3p for d in other equation
11p+10(16-3p)=122
11p+160-30p=122
160-19p=122
minus 160 both sides
-19p=-38
divide both sides by -19
p=2
sub back
n=2p
n=2(2)
n=4
d=16-3p
d=16-3(2)
d=16-6
d=10
2 pennies
4 nickles
10 dimes
The carpenter makes 1/4 of the job per hour.
The assistant makes 1/6 of the job per hour.
When they work together, they make 1/4 + 1/6 = 6/24 + 4/24 = 10/24 = 5/12 of the job each hour.
Thus, it will take 12/5 = 2 2/5 hours = 2 hours and 24 minuets for them to finish the job working together.
It is c $1.15 if u do the 27.60 divied by 24 u get dollar.15 cents
Answer:
x-=45
Step-by-step explanation:
-30= -4/5x + 6
-36= -4/5x
-180 = -4x
x=45
Step-by-step explanation:
8-2÷x
it should be written like that