Math130 HELP
posted by Enis on .
A compass and a ruler cost $5. The compass cost .70 cents more the the ruler. Jow much does the compass cost?

5/2=2.5
2.5+.7=3.20
2.5.7=1.8
Compass cost $3.20
Ruler cost $1.80 
In Paul's bicycle shop 40 bikes are needed new tires and 27 needed gear repairs, what is the greatest number of bikes could have neede both and the least number of bikes that could have needed both

Ashley's answer is not correct
Her compass does not cost 70 cents more than her ruler.
cost of ruler  x
cost of compass  x=70
x + x+70 = 500
2x = 430
x = 215
Ruler costs $2.15, compass costs $2.85.