Answer:
Option C 20
GOOD LUCK FOR THE FUTURE! :)
Given that the number is x,
10% increase will give us a new number of:
110/100*x
=1.1x
10% decrease will give us a new number of:
90/100*1.1x
=0.99x
This implies the new number is less than the original number
Density = Mass/Volume
Density = 6/12 = 0.5 g/mL or 0.5 kg/L
Are you trying to graph it because it is in y=mx+b form.
Setting it up, we have Dan + Bret + Maria all saving 600.00
Dan = 2B
Bret = B
Maria = B+60
2B + B + B + 60 = 600
4B = 540
B = 135
Dan = 2(135) = 270
Brett = 135
Maria = 135 + 60 = 195
