ITPEC IP April 2026 Question 53
ITPEC IP April 2026 — Question 53 of 100
An increase of 200 thousand yen — the faster two-person plan costs more per week.
Original: A makes 6 programs/week, so 36 ÷ 6 = 6 weeks and cost is 6 × 300 = 1,800 thousand yen. B makes 3/week, so together they make 9/week: 36 ÷ 9 = 4 weeks. New cost is 4 × (300 + 200) = 2,000 thousand yen. Difference: 2,000 − 1,800 = 200 thousand yen increase.
Answer (c)
Why not others: (a) and (b) wrongly predict savings; (d) overstates the increase by comparing incomplete cost components.
Key rule: Compare total cost as duration × combined weekly cost, after recomputing duration from combined productivity.
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