Write linear equation to represent each of the following situation.

1. Joseph chooses between two brands of milk. The price of brand A per box is P100.00 and the price of brand B is P120.00. He is to buy twice as many boxes of brand A and B. how many boxes of each brands will he purchases if his budget is only six hundred pesos.

2.Ryan spends P200.00 per month on shampoo and facial wash. The price of the shampoo is per P6.00 per sachet while facial is P10.00. He consumes 5 as many as sachet used in a moth is P90. How many sachet of each kind did he buy in a month?​