City Guilds Model Questions Vol1 2024 Engineering Question 26

Practice objective / multiple choice question 26 from the 2024 City Guilds Model Questions Vol1 Engineering examination.

City Guilds Model Questions Vol1 2024 Engineering Objective / Multiple Choice Medium Difficulty
Question 26 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2024 • ENGINEERING • objective

A workshop of total area 250 m² is divided into Zone A (120 m²) containing solid‑fuel equipment (fire‑class A) and Zone B (130 m²) containing liquid‑fuel equipment (fire‑class B). For fire‑class A the recommended extinguisher rating is 9 L per 12 m², and for fire‑class B it is 6 L per 9 m². Each extinguisher, regardless of class, can effectively cover at most 30 m² of floor area. The cost of a class A extinguisher is $45 and that of a class B extinguisher is $55. Determine the minimum number of extinguishers of each class that must be installed to satisfy both the volume‑rating and the coverage requirements, and compute the total minimum cost.

Answer Options

A. 9 class A extinguishers, 15 class B extinguishers; total cost = $1 200
B. 11 class A extinguishers, 15 class B extinguishers; total cost = $1 300
C. 10 class A extinguishers, 14 class B extinguishers; total cost = $1 250
Correct Answer D. 10 class A extinguishers, 15 class B extinguishers; total cost = $1 275
Correct Answer
D
Correct Option:
10 class A extinguishers, 15 class B extinguishers; total cost = $1 275

About This Question

This is City Guilds Model Questions Vol1 2024 Engineering Question 26. It is one of the objective questions from the 2024 City Guilds Model Questions Vol1 Engineering examination.

Difficulty level: Medium .

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