We have: 2 x handbags + 5 x blouses = 287 (1)
Handbag - Blouse = 42 => Handbag = Blouse + 42
We have: (1) ⇔ 2 x (blouse +42) + 5 blouses = 287
⇔ 2 blouses + 84 + 5 blouses = 287
⇔ 7 blouses = 287 - 84 = 203
⇔ 1 Blouse = 203 : 7 = 29
Therefore, the price of 5 blouses is computed as below:
29 x 5 = 145