Quantitative Aptitude - Arithmetic Ability Questions

Find the LCM of 34, 51 and 68.

Parvesh is three times as efficient as Dinesh. Parvesh takes 20 days less than Dinesh to complete a book. If both of them work together, then in how many days the book will be completed?

If a person walks at 15 km/hr instead of 9 km/hr, he would have walked 3 km more in the same time. What is the actual distance (in kms) travelled by him? 

Prabodh has done 1/2 of a job in 30 days, Sapan completes the rest of the job in 45 days. In how many days can they together do the job?

What is the value of sin225°+ sin265°?

If Tan θ = 9/40, then Sec θ = ?

0.09% of 25% of 1200 is equal to____________.

In what ratio sugar at Rs 30/kg should be mixed with sugar at Rs 45/kg so that on selling the mixture at Rs 42/kg there is a profit of 20%?