Math Help

Quote:

The sum of two numbers is 85. Twice one number plus four times the other is 218. Determine the numbers.

x + y = 85
2x + 4y = 18

y = 85-x

2x + 4(85-x) = 18
-2x + 340 = 18
-2x = -322
x = 161
y = 85 - x = 85 - 161 = -76

Rom:

Quote:

The sum of two numbers is 85. Twice one number plus four times the other is 218. Determine the numbers.

x + y = 85
2x + 4y = 218

y = 85-x

2x + 4(85-x) = 218
-2x + 340 = 218
-2x = -122
x = 61
y = 85 - x = 85 - 61 = 24

Sorry ROM, I correct you a little bit.

Just to make sure he see your error and he don't reproduce it!

thank you. no need to apologize