Final answer:
To determine which store is selling candy bars at a cheaper rate, compare the prices per candy bar at each store. Store B sells candy bars at a cheaper rate per bar ($2.40) compared to Store A ($2.50).
Step-by-step explanation:
To determine which store is selling candy bars at a cheaper rate, we need to compare the prices per candy bar at each store.
At Store A, you can get 4 candy bars for $10. To find the price per candy bar, we divide the total cost by the number of candy bars: 10 / 4 = $2.50 per candy bar.
At Store B, you can get 5 candy bars for $12. Again, we divide the total cost by the number of candy bars: 12 / 5 = $2.40 per candy bar.
Therefore, Store B is selling candy bars at a cheaper rate because the price per candy bar is lower ($2.40 compared to $2.50 at Store A).