During a Hajj field-office distribution exercise, a store of 1,200 water units issues 40% in the morning, 40% of the remainder in the afternoon, and then loses 54 damaged units. What percentage remains usable?
- 35%, after both distributions and the damaged units.
- 31.5%, being 720, then 432, then 378 units.
- 33%, counting the damage within the afternoon percentage.
- None of these
Explanation
Step 1: Morning distribution
40% of 1200 = 0.40 x 1200 = 480 units issued
Remaining = 1200 - 480 = 720 units
Step 2: Afternoon distribution
40% of the remainder = 0.40 x 720 = 288 units issued
Remaining = 720 - 288 = 432 units
Step 3: Damaged units
432 - 54 = 378 units remaining usable
Step 4: Find percentage remaining
(378 / 1200) x 100 = 31.5%
Answer: 31.5%, being 720, then 432, then 378 units.
Last verified on 11-09-2026
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