For the following questions answer them individually
Two varieties of tomatoes are bought in the ratio 2 : 3, where the price of first variety is twice that of the
second. The varieties are mixed and sold at Rs.17.50 per kg, resulting in a profit of 25%. Find the costs of the two varieties before selling.
Arul walks 100 m towards east and then 80 m to his right. Then, every time turning to his left, he walks 50, 150 and 150 m, respectively. How far and in which direction is he now from the starting point?
If the volume of a sphere is divided by its surface area, the result is 27 cm. Find the radius of the sphere
If '+' means 'x', '-' means '+', 'x' means '÷' and '÷' means '-' , then, 3 x 2 + 4 - 2 ÷ 9 = ?
What is a variable resistance used in a circuit usually operated by a sliding contact on a long coil of resistance called?
