Explanation

(i) Let N= No of students, T = Time, ₽ = Quantity or no of tanks.

From the given question, we can establish a tree relation as shown

$N_1$ $T1$ $Q_1$

8 students $2/3hr$ 12 tanks

4 students $1/3 hr$ $x$

$N_2$ $T_2$ $Q2$

$N α Q/T$

(i) Let N= No of students, T = Time, ₽ = Quantity or no of tanks.

From the given question, we can establish a tree relation as shown

$N_1$ $T1$ $Q_1$

8 students $2/3hr$ 12 tanks

4 students $1/3 hr$ $x$

$N_2$ $T_2$ $Q2$

$N α Q/T$