Quantitative Aptitude - Arithmetic Ability Questions

In the given figure, a circle touches the sides of the quadrilateral PQRS. The radius of the circle is 9 cm. RSP = SRQ = 60 deg and PQR = QPS = 120 deg. What is the perimeter (in cm) of the quadrilateral?

If a person has sold an article for Rs. 1300 and made a profit of 30%, find the cost price of the article.

Sound travels at 330 metres per second. The distance (in kilometres) of a thunder cloud when its sound follows the flash after 10 seconds

Of the 5 numbers whose average is 72, the first is 1/8 times the sum of other 4. The first number is _____.

Let A(O,-1), B(0,3) and C(2,1) be three points. Let   △1 be the area of the triangle ABC and △2 be the area of the triangle formed by the mid points of the sides of the triangle whose vertices are A, B and C such that △1=1 ,△2=x Find the value of x .

If a2+b2+c2=83and a+b+c=15 then the value of ab+bc+ca is

Find 150% of X, if X is the least number which when divided by 6, 7, 8, 9 and 12 leaves remainders 2, 3, 4, 5 and 8 respectively.