Answer:
16
Step-by-step explanation:
Y=3x-5
x+y=215
x+3x-5=215
4x-5=215
4x=220
x=55
y=215-55
y=160
Aaron got 55, and David got 160.
Answer:
-580
Step-by-step explanation:
go down is negative, go up is positive
so -650+150-80= -580
Answer:
16:29
Step-by-step explanation:
2u+3u=5u
40/5=8
Each unit represents 8 people
Hence, number of women:
8 x 2= 16
Number of men:
8 x 3 =24
New number of men:
24 + 5 = 29
New ratio:
16:29
Answer:
L =80
w=60
Step-by-step explanation:
P =280
L =w +20
=>L +w=280 :2 =140
w+20+w=140
2w=140 - 20
2w =120
w=120 :2 =60
L=60 +20 =80
P =2L +2w
P =2 ×80 +2 ×60
P=160 +120
P=280