Question

( Melanie has 230 coins in her collection- Number of European and non-European coins)And now has 180 European coins. Write an equation To determine the number of non-European coins, E, If Melanie has t total coins figure/find the Non-European coins and Identify the constant of proportionality. Pls show work thank you:/

Answer 1

The amount of Non-Europeans coins is 50, and the constant of proportionality is approximately 0.217

Explanation:

Let T be the total of coins, E be the number of European coins, and nE be the number of non-European coins, then

`T=E+nE`

so, in order to know the amount of non-European coins (nE), we clear nE from the equation

`nE=T-E=230 coins-180coins=50coins`

Finally, the constant C of proportionality is given by the following ratio

`C=(non-European)/(Total)=(nE)/(T)=(50)/(230)\approx0.217`

Answer 2

Total number of coins(including European and non European coins) =230

Number of European coins = 180

Let the number of non European coins be = E

T is the total coins or T =230

The equation to determine non European coins is

`E=T-180`

Solving this we get
`E=230-180=50`

hence, E = 50