DAA DAA Mathematical Reasoning and Arithmetic 3

Question 1

A perimeter fence is 3.6 km long. Posts are placed every 40 meters. How many posts are needed?

Accepted Answer

90

Answer

3.6 km = 3,600 m; 3,600 ÷ 40 = 90 posts.

Question 2

A ration pack feeds 2 soldiers for 1 day. How many packs are needed for 20 soldiers for 3 days?

Accepted Answer

30

Answer

One pack covers 2 soldier-days; 20 soldiers × 3 days = 60 soldier-days; 60 ÷ 2 = 30 packs.

Question 3

A jeep travels at 60 km/h. How long does it take to cover 90 km?

Accepted Answer

1.5 hours

Answer

Time = distance ÷ speed = 90 ÷ 60 = 1.5 hours.

Question 4

A test has 40 questions. A candidate answers 32 correctly. What is their percentage score?

Accepted Answer

80%

Answer

32 ÷ 40 × 100 = 80%.

Question 5

Ammunition boxes weigh 15 kg each. A helicopter can carry 450 kg of cargo. How many boxes can it carry?

Accepted Answer

30

Answer

450 ÷ 15 = 30 boxes.

DAA - Defence Aptitude Assessment Practice Test