Final answer:
Mohammed will pay $20 for 10 pounds of hamburger, as it costs $2 per pound.
Step-by-step explanation:
If Mohammed buys 10 pounds of hamburger, and the hamburger sells for 3 pounds for $6, first we need to calculate the price per pound. This can be done by dividing the total cost by the number of pounds, so $6 ÷ 3 pounds equals $2 per pound. Therefore, if Mohammed wants to buy 10 pounds, the cost would be 10 pounds multiplied by the price per pound, which is $2. The total amount Mohammed will pay for 10 pounds of hamburger will then be $2 times 10, which equals $20.