Quantitative Aptitude - MCQ Practice Questions

Five numbers are in ratio 1:2:3:4:5 with HCF = 6. Find their LCM using shortcut method.

Find the greatest number that divides 1548, 1800, and 1992 exactly.

Two numbers have HCF 15 and LCM 900. If their difference is 15, find the numbers.

The HCF of three numbers is 12, and their LCM is 1800. If two numbers are 60 and 90, find the third number.

Find the greatest number that divides 2070, 2415, and 2760 leaving the same remainder in each case.

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

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?

Three pipes A, B, C fill a tank in 12, 15, and 20 hours respectively. All three working together will fill the tank in approximately how many hours?

The LCM of two numbers is 280 and their HCF is 14. If the difference between the numbers is 14, find the numbers.

A person can complete a job in 8 days. Another person can complete it in 12 days. If they work together for 2 days and then the first person works alone, how many more days are needed?

A person bought an item and marked it 50% above cost. He then gave discounts of 10% and another 10% successively. What is his profit percentage?

A wholesaler allows 40% discount on marked price. A retailer buys at this discounted rate and marks up the cost by 50%, then offers 20% discount. What is the net profit/loss percentage on marked price?

A trader allows 25% discount on marked price. If he gains 25% profit, what is the ratio of cost price to marked price?

A merchant sells an item at ₹504 making a profit. Had he bought it at 10% more and sold at ₹28 less, he would lose 10%. What is the cost price?

A contractor agrees to build a bridge in 300 days. He employs 10 workers. After 150 days, he finds that only half the work is complete. How many additional workers does he need to finish on time?

X and Y can complete a task in 8 days. Y and Z can complete it in 12 days. X and Z can complete it in 16 days. How many days will X alone take?

A merchant sells two items for ₹500 each. On one he gains 25% and on the other he loses 25%. What is his overall profit or loss percentage?

A man can row 40 km downstream and 24 km upstream in 8 hours. The next day he rows 24 km downstream and 40 km upstream in 9 hours. Find the speed of boat in still water.

A's efficiency is 20% more than B's. If both work together for 5 days and then A leaves, B completes remaining work in 5 more days. In how many days can A complete the work alone?

A train passes two persons in 5 seconds and 8 seconds respectively. If their speeds are 10 m/s and 8 m/s respectively, find the train's length.