Answer:
1/2 bags
Step-by-step explanation:
Armin has 3 flower gardens
She boughth 5 bags of celdar mulch to cover the garden
Armin uses 1 1/2 bad of much on each garden
1 1/2
3/2×3
= 9/2
The bags of celdar mulch left can be calculated as follows
5-9/2
= 10-9/2
= 1/2
Hence there are 1/2 bags of celdar mulch left
