Question

A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ?
A) 8
B) 6
C) 5
D) 3

Answer 1

Volume of earth dug out
= volume of the rectangular tank
= 5 × 4.5 × 2.1 
= 47.25 m3

Given that length and breadth of the field are 13.5 m and 2.5 m respectively

Answer 2

A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ?
A) 8
B) 6
C) 5
D) 3✔️✔️