Quantitative Aptitude - Arithmetic Ability Questions

If Shubhangi walks with a speed of 2 km/hr, then she reaches her school 5/2 minutes late but if she walks with a speed of 2.5 km/hr, then she reach 5 minutes before the scheduled time. What is the distance (in km) of her school from her house?

If 5 person together can make 5 mats in 5 hrs, then 10 person in 10 hours will make

The average of five consecutive even numbers is 40. What is the value of smallest of these numbers?

Average age of a team having 12 players is 23 years. If the age of the coach is also included, then the average age increases by 2 years. What is the age (inyears) of the coach?

If x2 + (1/x2) = 31/9 and x > 0, then what is the value of x3 + (1/x3)?

What is the simplified value of sin2(90–θ)–[sin(90–θ)sinθ/tanθ]?

If Cot θ = 21/20, then what is the value of Sec θ?

A miner sells a diamond to a trader at a profit of 40% and the trader sells it to a customer at a profit of 25%. If the customer pays Rs 56 lakhs to buy the diamond, what had it cost the miner (in Rs lakhs)?