Quantitative Aptitude - Arithmetic Ability Questions

A can do a work in 36 days and B in 12 days. If they work on it together, then in how many days will they be able to do the work?

The average of 41 consecutive odd numbers is 49. What is the largest number.

A man travels 420 kilometres in, partly by rail and partly by steamer. He spends 8 hours more time on steamer. If the velocity of the steamer is 35 km/hr and the velocity of rail is 65 km/hr, how much distance does he cover by steamer?

On a certain item profit is 150%. If the cost price increases by 25% what will be the new profit margin (in %)?

In what ratio sugar of Rs 38 per kg and Rs 30 per kg be mixed with each other so that on selling mixture at Rs 35.2 per kg there will be a profit of 10%?

The age of Ravi is twice the age of Prakash and three times the age of Kumar. If the age of Prakash is 24 years, then what will be the age of Kumar after 4 years ?

1 packet of biscuits costs Rs 16 but a pack of 4 of the same packet of biscuits costs Rs 56. What is the effective discount (in %) on the pack?

Find the LCM of 3.2, 2.72, 1.28 and 1.44