Quantitative Aptitude - Arithmetic Ability Questions

Two motorcycles are moving towards each other with the speeds of 38 km/hr and 88 km/hr respectively. One second before the collision what will be the distance (in metres) between the two motorcycles?

If Mohan purchase 13 articles for Rs 12 and sells all the articles at the rate of 12 articles for Rs 13, then what will be the profit percentage?

∆PQR is right angled at Q. If cosecP = 17/15, then what is the value of sinR ?

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

A solid copper sphere of radius 9 cm is melted and reformed into a wire of radius 1 mm. What will be the length of this wire? (Take π = 22/7)

If the hour hand of a clock moves by 18 deg then by how many degrees does the minute hand move during the same time?

There are saplings of 361 mangoes tree and neem tree in a garden. The ratio of the number of mango tree to that of neem tree saplings are in the garden?

If a – (1/a) = b, b – (1/b) = c and c – (1/c) = a, then what is the value of (1/ab) + (1/bc) + (1/ca)?