Mathematics for IGCSE & O level - Algebraic Manipulation (Section 6 - No. 23)
Which expression represents the total cost if apples cost $1.50 each and you buy 'n' apples?
1.50 + n
1.50n
1.50 - n
n/1.50
解释
The total cost is the price per apple multiplied by the number of apples: 1.50 * n = 1.50n.