Assume the following:
Brad has been in the soccer team for b years.
Scot has been in the soccer team for s years.
"The number of years that brad has been on the soccer team is 2 less than 5 times the number of years that Scott has"
means: b=5s-2
"in total,the boys have been on the soccer team for 10 years."
means: b+s=10
so we have the equations:
i) b=5s-2
ii) b+s=10
substitute b in ii) with 5s-2, as they are equal, from i
(5s-2)+s=10
5s-2+s=10
6s=12
s=2,
then , from b+s=10, b=8
Answer: Brad has been in the team for 8 years.
180-(64+71) = 45
8x-11 = 45
8x = 45+11
8x = 56
x = 56 / 8
x = 7
Let x be the number of hours of labor required. The equation would be:
25x + 16 = 211.
Answer = x = (211-16)/25 = 7.8hours
