Question

at amadou’s store, the cost of nine pounds of rice is $31.00. at idil’s store, the cost of thirty - six pounds of the same rice is $127.00. compare prices by finding a pair of common values (same number of pounds of rice or same price). round your answers to the nearest cent if necessary.
answer attempt 1 out of 2
at amadou’s store, (square) pounds of rice cost $(square). at idil’s store, (square) pounds of rice cost $(square). (square) store has the better price.

Explanation:

Step1: Find common poundage

Notice that 36 is a multiple of 9: $36 = 9 \times 4$

Step2: Calculate Amadou's 36-lb cost

Multiply Amadou's 9-lb cost by 4: $\$31.00 \times 4 = \$124.00$

Step3: Compare the two 36-lb costs

Amadou's 36-lb cost: $\$124.00$; Idil's 36-lb cost: $\$127.00$. Since $\$124.00 < \$127.00$, Amadou's price is better.

Answer:

At Amadou's store, $\boldsymbol{36}$ pounds of rice cost $\boldsymbol{\$124.00}$. At Idil's store, $\boldsymbol{36}$ pounds of rice cost $\boldsymbol{\$127.00}$. $\boldsymbol{Amadou's}$ store has the better price.