ExxonMobil Test ExxonMobil Numerical Reasoning 2

Question 1

Production data shows outputs of 320, 345, 310, 355, and 330 units over five days. What is the average daily output?

Accepted Answer

332

Answer

(320+345+310+355+330) ÷ 5 = 1,660 ÷ 5 = 332 units.

Question 2

If crude oil costs $72 per barrel and a refinery needs 15,000 barrels, what is the total cost?

Accepted Answer

$1,080,000

Answer

72 × 15,000 = $1,080,000.

Question 3

A plant's efficiency drops from 94% to 87%. What is the percentage-point decrease?

Accepted Answer

7 points

Answer

94 − 87 = 7 percentage points.

Question 4

A pipe can fill a storage tank in 4 hours and another pipe can drain it in 6 hours. If both are open, how long to fill the tank from empty?

Accepted Answer

12 hours

Answer

Net fill rate = 1/4 − 1/6 = 3/12 − 2/12 = 1/12 per hour, so it takes 12 hours.

Question 5

An ExxonMobil facility uses 4,500 kWh of electricity per day at $0.08 per kWh. What is the monthly electricity bill (30 days)?

Accepted Answer

$10,800

Answer

4,500 × 0.08 × 30 = $10,800.

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