Bonjour svp pouvez vous m'aider. Le probleme dit que l'age de Hadi est le triple de celui de Shana dans quatre ans ils auront a eux deux 52 ans. Trouver l'age de Hadi et celui de Shana. Merci d'avance

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each,and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent.how much did jame pay at the end?