Nancy bought 360 tropical fish for a museum display. She bought 8 times as many goldfish as angelfish. How many of each type of fish did she buy?

Which is a system of equations to model the problem if x represents the number of angelfish Nancy bought, and y represents the number of goldfish she bought?

x – y = 360
y = 8x

x + y = 360
y = 8x

x + y = 8
y = 360x

x + 8y = 360
y = 8x

Question

Nancy bought 360 tropical fish for a museum display. She bought 8 times as many goldfish as angelfish. How many of each type of fish did she buy?

Which is a system of equations to model the problem if x represents the number of angelfish Nancy bought, and y represents the number of goldfish she bought?

x – y = 360
            y = 8x

x + y = 360
            y = 8x

x + y = 8
            y = 360x

x + 8y = 360
            y = 8x

solomonzelman · Answer

Goldfish=g
Angelfish=a

g=a * 8
a+g=360

a * 8 + a = 360
9a=360
a=40

So she bought 40 of angelfish
and knowing that goldfish is 8 times more
40 * 8 
which is equal to 320

so she bought 320 of goldfish

amoodarya · Answer

Goldfish=x 
Angelfish=y 
as "SolomonZelman" says 
x+y=360
y=8x

anonymous · Answer

thank u to the both of u for explaining

solomonzelman · Answer

You welcome!