At the farmer's market 2 watermelons cost $6.  At the grocery store, 4 watermelons cost $20.  Which place has a better deal?

To determine which place has a better deal, we need to find the cost per watermelon at both the farmer's market and the grocery store.

1. Calculate the cost per watermelon at the farmer's market:

   • 2 watermelons cost $6.
   • Cost per watermelon = Total cost / Number of watermelons
   • Cost per watermelon = $6 / 2
   • Cost per watermelon = $3

2. Calculate the cost per watermelon at the grocery store:

   • 4 watermelons cost $20.
   • Cost per watermelon = Total cost / Number of watermelons
   • Cost per watermelon = $20 / 4
   • Cost per watermelon = $5

3. Compare the costs:

   • Farmer's market: $3 per watermelon
   • Grocery store: $5 per watermelon

The farmer's market has a better deal because the cost per watermelon is lower ($3 compared to$5).