Find the value of \( \sqrt{992} \frac{1}{4} \) \( \begin{array}{llll}\text { (1) } 31.05 & \text { (2) } 31.5 & \text { (3) } 31.25 & \text { (4) } 32\end{array} \)

2074 Q.No. 1 A person drives a car between the two places \( x \) and \( y \). On his outward joumey he consumes 8 km per liter of petrol, on his return journey he covers 12 km per liter. Find the average of his mileage assuming the distance between the two places to be 100 kms .

68. Колико је: а) \( 12 \cdot(-4) ; \quad \) б) \( (-8) \cdot 11 ; \quad \) ц) \( (-2) \cdot(-37) \)

Ex 14 : Sand costs \( \$ 98.90 \) per tonne. This cost includes a tax of \( 15 \% \), Calculate the amount of tax paid per tonne of sand.

Решите задачу: \( \left\lvert\, \begin{array}{l}\text { За три дня проложили } 112 \text { м кабеля. За первый } \\ \text { день проложили } \frac{4}{7} \text { кабеля, а за второй - } \frac{5}{12} \\ \text { оставшегося. Сколько метров кабеля проложили за } \\ \text { третий день? }\end{array}\right. \)

Ans: 16 rate of 3 km per hour and the third km at the rate of 6 km per hour. Find the average speed of the cyclist.