10 friends went for dinner and planned to split Rs. 200 equally. 2 didn't pay. How much did each of the rest pay?
Rs. 25
If 2 of the 10 friends do not pay, the cost is split equally among the remaining \(10 - 2 = 8\) friends.
Amount per paying friend = \(\dfrac{200}{8} = 25\).
Hence each of the remaining friends paid Rs. 25.
In a pet shop, there are only parrots and rabbits. Total heads = 40, and total legs = 100. How many parrots are there?
A group of 20 students are sitting in a circle. Each shakes hands with exactly 3 neighbours. How many handshakes occur?
The population of a village increased by 10% in the first year and 20% in the second year. What is the total percent increase after 2 years?
The rectangle represents a set of calculations that are common across all the given equations. Identify the calculations involved and solve the fourth equation on the same basis:
$7 \blacksquare 4 = 27/4$
$6 \blacksquare 1 = 5$
$4 \blacksquare 3 = 11/3$
$a \blacksquare b = ?$