by addition the value is 2.
Red pebble is equal to 3 yellow pebble
A blue marble is equal to a red pebble and 2 yellow pebble
A green pebble is equal to 3 red pebble
Suppose R,B,Y,G represents red, blue, yellow, and green pebbles
R=3Y
B=R+2Y
G=3R
Express Red in terms of yellow in blue pebble equation
B=3Y+2Y =5Y
Now, express Green Pebble in terms of yellow pebble
G=3R=3(3Y)=9Y
by addition Value of:
[tex]\frac{G+B}{2R+Y} \\\frac{9Y+5Y}{2*3Y+Y} \\\frac{14Y}{7Y} =2[/tex]
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