SIFT Math 3

Question 1

If a helicopter must climb 4,500 feet over a horizontal distance of 9 miles, what is the climb gradient in feet per mile?

Accepted Answer

500 feet/mile

Answer

Climb gradient = altitude change / horizontal distance = 4,500 ft / 9 miles = 500 ft/mile.

Question 2

A rectangular landing zone is 80 meters long and 45 meters wide. What is its area?

Accepted Answer

3,600 m²

Answer

Area of a rectangle = length × width = 80 × 45 = 3,600 m².

Question 3

A flight burns fuel at 22 gallons per hour. If the aircraft departs with 110 gallons, how many hours of flight time remain after 2.5 hours?

Accepted Answer

2.5 hours

Answer

Fuel used = 22 × 2.5 = 55 gallons. Remaining = 110 - 55 = 55 gallons. Flight time remaining = 55 / 22 = 2.5 hours.

Question 4

What is 40% of 250?

Accepted Answer

100

Answer

40% of 250 = 0.40 × 250 = 100.

Question 5

A pilot needs to fly 180 nautical miles and has 2.5 hours. What minimum groundspeed is required?

Accepted Answer

72 knots

Answer

Groundspeed = Distance / Time = 180 / 2.5 = 72 knots.

SIFT Exam Practice Test