Quantitative Aptitude - Arithmetic Ability Questions

If cos 60° - sec 30° = x, then the value of x is

Samit was given some money to take care of his travel during a 6-day sales drive he had to undertake. However, he had to increase his stay by another 4 days and as a result his average daily travel allowance went down by Rs. 56. What was the amount that was sanctioned to him in the beginning?

10 is added to a certain number, the sum is multiplied by 7, the product is divided by 5 and 5 is subtracted from the quotient. The remainder left is half of 88. What is the number?

If A : B = 3 : 5, then what is the value of A + B : B?

In a triangle ABC, the length of in-radius and circum-radius is 2 units and 6 units respectively. Find the distance (in units) between the in-centre and circum-centre.

If 1+121+141+161+181-131-151-17 = 1+ 1x, then what is the value of x?

In figure, DE || BC. If DE = 3 cm, BC = 6 cm and area of ΔADE = 15 sq cm, then the area of ΔABC is

Present ages of Sai and Satheesh are in the ratio of 5:4 respectively. Three years hence, the ratio of their ages will become 11:9 respectively. What is Satheesh's present age in years?