From the statement, we know that the grain trader buts the following amounts:
• 3200 pounds,
,
• 7200 pounds,
,
• 600 pounds.
To find the total weight of the purchase, we simply add the three quantities:
![T=3200\text{pounds}+7200\text{pounds}+600\text{pounds}=11000\text{pounds.}](https://img.qammunity.org/2023/formulas/mathematics/college/gs8e5z2sliw4p1vbwq0jeuyzzb2dt1i7fq.png)
Now, taking into account that:
![1\text{ton}=1000\text{pounds.}](https://img.qammunity.org/2023/formulas/mathematics/college/yiqzrvo0otv1es987uqgkpne13k6lisdq6.png)
We can write the total weight as:
![T=11000\text{pounds}=11\cdot(1000\text{pounds)}=11\cdot(1\text{ton)}=11\text{tons.}](https://img.qammunity.org/2023/formulas/mathematics/college/8e135cdyczdtwzyb9qkao3wn89memwyjrv.png)
Answer
The total weight of the purchase is 11 tons.