Quantitative Aptitude - Arithmetic Ability Questions

Four pairs of words are given. Find the odd one out.

A can do a work in 16 days and B in 20 days. If they work on it together for 8 days, then what fraction of work is left?

Both A and B together can complete a work in 20 days and B alone can complete the same work in 36 days. In how many days will A alone complete the work?

A train crossed a 140 m long platform in 15 seconds and a 180 m long platform in 17 seconds. The speed of the train was

The value of tan80° tan10° + sin270° + sin20∘

What is the average of 90, 250, 240, 204, and 616?

When Bablu decreases the selling price of the shoes from Rs. 360 to Rs. 345, his loss increases by 4%. The cost price of the shoes is

Rohan sells two articles. The cost price of the first article is equal to the selling price of the second article. The first article is sold at a profit of 40% and the second article is sold at a loss of 40%. What is the ratio of the selling price of the first article to the cost price of the second article?