Question
James spent $36 to buy 4 footballs. The price of 16 such footballs is _____________.
- 140
- 141
- 142
- 144
Hint:
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
The correct answer is: 144
Here, it is given that James spent $36 to buy 4 footballs. We have to find the cost of 16 footballs.
We have,
Cost of 4 footballs = $36.
Cost of 1 football = 36/4 = $9.
So, cost of 16 footballs = 9 × 16 = $144.
Hence, the correct option is D.
We can find the cost of 16 footballs by multiplying the cost of 4 footballs by 4.
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