Question 940917
Two numbers, one is 20 more than the other
X is the larger number, the other is X-20
The sum of the two numbers is 400
X+(X-20)=400
2X-20=400  Add 20 to each side
2X-20-+20=400+20
2X=420 divide both sides by 2
X=210 ANSWER the larger number is 210
CHECK:
the smaller number is 20 less
small=210-20=190
sum is 400: smaller+larger=400
190+210=400
400=400