Respuesta :
First we had 15 tanks with 20 fish in each tank. 20 * 15 = 300
We get another 15 tanks with 20 fish each tank. 20 * 15 = 300
Add: 300 + 300 = 600
We get another 15 tanks with 20 fish each tank. 20 * 15 = 300
Add: 300 + 300 = 600
if 15 tanks contain 20 each the total fishes in 15 tanks=15×20=300
now another 15 tanks with 20 fishes each= 15×20=300
now total=300+300
=600
now another 15 tanks with 20 fishes each= 15×20=300
now total=300+300
=600