Difficulty: Easy
Correct Answer: 1500
Explanation:
Introduction / Context:
This is a ratio and difference-per-recipient problem. A fixed total of sweets is split among different headcounts, leading to a per-child change of exactly one sweet. Setting up a simple equation in terms of total sweets solves it cleanly.
Given Data / Assumptions:
Concept / Approach:
Let total sweets be S. Then planned share per child is S/300, and actual share per child is S/250. The given condition S/250 = S/300 + 1 yields a simple linear equation for S.
Step-by-Step Solution:
Set S/250 = S/300 + 1.Multiply through by 1500 (LCM of 250 and 300): 6S = 5S + 1500.Solve: S = 1500.Therefore, 1500 sweets were prepared.
Verification / Alternative check:
Original per-child share: 1500/300 = 5. Actual per-child share: 1500/250 = 6. The difference is exactly 1 sweet, as required.
Why Other Options Are Wrong:
1450, 1650, 1700, and 1800 do not satisfy S/250 − S/300 = 1.
Common Pitfalls:
Using 300 − 50 = 200 by mistake; mixing up “one extra per child” as “one extra total.”
Final Answer:
1500
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