Quantitative Aptitude - Arithmetic Ability Questions

Two numbers are in the ratio 2:5 and their HCF is 18. Their LCM is

If a sum of Rs.12500 is invested for 1 year at 12% per annum interest being compounded semi­-annually, then interest earned is

Marked price of an article is Rs 520 and selling price is Rs 384.8. What is the discount percentage?

If  tan2θ + cot2θ = 2, then what is the value of 2sec θ cosec θ?

Two water-squash mixtures, the first having a water-to-squash ratio of 4 : 1 and the other having a ratio of 3 : 1, are blended in the ratio 1 : 2. What is the water : squash ratio in the blend?

If the rice is sold at Rs 56 per kg, there would be a 40% loss. To earn a profit of 20% what should be the price of rice (per kg)?

Raj purchased two laptops, first for Rs 42500 and the second for Rs 36200. He sold first laptop at a profit of 12% and the second laptop at a loss of 12%.What is the overall profit or loss?

35 persons are engaged to complete a work in 60 days. After 32 days it is observed that only (2/5)th part of the work has been done. The number of persons to be engaged to complete the remaining work in the said period is