Question

a jar of yellow and green marbles has a ratio of 4 to 3. there are 320 yellow marbles. How many green marbles are in the jar? Round to the nearest tenth.

Answer 1

The jar of yellow and green marbles has a ratio of 4 to 3, so:

`4\colon3=(4)/(3)`

this tells us that for every 4 yellow marbles, there are 3 green marbles

so:

`\begin{gathered} (320)/(x)=(4)/(3) \\ where \\ x=Number_{\text{ }}of_{\text{ }}green_{\text{ }}marbles \\ so\colon \\ x=(320\cdot3)/(4) \\ x=240 \end{gathered}`

There are 240 green marbles in the jar