Respuesta :
She has 19 total.
Start out with 9 blue.
7 fewer yellow would be 2 yellow.
4 times as many green as yellow is 2 times 4 which is 8.
9+2= 11
11+8= 19
Start out with 9 blue.
7 fewer yellow would be 2 yellow.
4 times as many green as yellow is 2 times 4 which is 8.
9+2= 11
11+8= 19
19 envelopes in all
9 blue envelopes
2 yellow envelopes
8 green envelopes
9 blue envelopes
2 yellow envelopes
8 green envelopes