Sarathecutegirl5775 Sarathecutegirl5775
  • 03-04-2019
  • Mathematics
contestada

A and B share the cost in a ratio of 3:2 . The cost is ?85; how much does A pay?

Respuesta :

calculista
calculista calculista
  • 13-04-2019

Answer:

The amount of money A pays is [tex]\$51[/tex]

Step-by-step explanation:

Let

x-----> amount of money A pays

y-----> amount of money B pays

we know that

[tex]x+y=85[/tex] ------> equation A

[tex]\frac{x}{y}=\frac{3}{2}[/tex]

so

[tex]y=\frac{2}{3}x[/tex] ------> equation B

substitute equation B in equation A and solve for x

[tex]x+(\frac{2}{3}x)=85[/tex]

[tex]\frac{5}{3}x=85[/tex]

[tex]x=85*3/5=\$51[/tex]

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