SOLUTION: what number is 129 less than twice 78? a boy's step is 1.6dm long. how many steps will it take him to cover 500m distance? if 12:7=8:n, what is n the sum of 2 numbers is 76 whil

Algebra ->  Real-numbers -> SOLUTION: what number is 129 less than twice 78? a boy's step is 1.6dm long. how many steps will it take him to cover 500m distance? if 12:7=8:n, what is n the sum of 2 numbers is 76 whil      Log On


   



Question 315841: what number is 129 less than twice 78?
a boy's step is 1.6dm long. how many steps will it take him to cover 500m distance?
if 12:7=8:n, what is n
the sum of 2 numbers is 76 while the difference is 8. find the smaller number.

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
A)
27
B)
500/1.6=312.5 steps
C)
x+x+8=76
2x=68
x=34
x+8=42