Kevin Kirkpatrick

Sam can sort 4000 pieces of mail in 5 hours. With a co-worker they can sort 4000 pieces of mail in 3 hours. How long will it take his co-worker to sort 2000 pieces of mail.

Three numbers are such that the first number is 10 less than twice the second and the second number is 4 more than three times the third. Twice the second number is equal to the sum of the first and third numbers. Find the numbers

10x+5(x+2)+1(3)(x+2)=52 10x+5x+10+3(x+2)=52 10x+5x+10+3x+6=52 18x+16=52 18x=36 x=2 2 dimes 4 nickels 12 pennies