Question

Joe weighs 30 lbs less than twice ken's weight. If ken gains 10 pounds then together they would weigh 250 pounds. How much does each of them weigh? let x be ken's weight.

my work: 2x - 30 = j
x+ 10 + J = 250

and now im stuck, can someone show me how to find their weight and solve these equations cause im confused, thanks :)

Answer 1

combine your equations:

x+10+2x-30=250
then
3x-20=250
then
3x=270
then
x=90

Ken weighs 90 and Joe weighs 150

Answer 2

well, since x+10+j = 250
x = 240-j

plug that into the other equation and you have

2(240-j) - 30 = j
480 - 2j - 30 = j
450 = 3j
j = 150
so, x = 240-150 = 90

Answer 3

Thank you so much :)