3/4 of alvin's marbles are black and 1/5 are green. what would be the ratio of black marbles to the green marbles?

In this question , it is given that

of Alvin's marbles are black and are green.

And we have to find the ratio of black marbles to the green marbles.

Multiplying both numerator and denominator by 20

So the required ratio is 15:4 .

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

no he doesnt because "-16' is negatiive

step-by-step explanation: