Quantitative Aptitude - MCQ Practice Questions

Two numbers have an HCF of 18 and LCM of 540. How many pairs of such numbers are possible?

A merchant offers a discount of 25% on marked price. If he still makes 20% profit, find the ratio of cost price to marked price.

Pipe A fills a tank in 15 hours, Pipe B fills it in 20 hours, and Pipe C empties it in 30 hours. If A and B fill while C empties, in how much time is the tank filled?

A boat's speed in still water is 12 km/h and the current speed is 3 km/h. If it travels 90 km downstream and returns, find total time taken.

The HCF and LCM of two numbers are 15 and 360 respectively. If one number is 45, find the other number.

Find the HCF of 144, 180, and 216 using prime factorization method.

A train travels 360 km in 6 hours. Find the time taken to travel 600 km at the same speed.

The LCM of 24 and 36 is?

A boat travels 48 km upstream in 8 hours and 48 km downstream in 6 hours. Find the boat's speed in still water.

Pipe A fills a tank in 20 hours, Pipe B fills it in 30 hours. If both work together for 8 hours, what fraction of tank remains unfilled?

Two workers A and B can complete a job in 15 days and 20 days respectively. In how many days can they complete it together?

A merchant marks goods at ₹500 and offers 20% discount. If cost price is ₹300, find profit percentage.

Simple Interest on ₹8000 at 6% per annum for 2.5 years is?

HCF of 78, 104, and 156 is?

A train 180 m long crosses a bridge 420 m long in 30 seconds. Find the train's speed in km/h.

LCM of three numbers 12, 18, and 24 is?

Compound Interest on ₹10,000 at 10% per annum for 2 years is?

If HCF(a,b) = 6 and LCM(a,b) = 180, and one number is 30, find the other number.

Two trains of lengths 200m and 150m travel towards each other at 60 km/h and 40 km/h respectively. Time to cross each other is?

A person buys an article for ₹400 and sells it for ₹520. What is the profit percentage?