Question

The cost of 1 kg of sugar is ₹38.5. Find the cost of 1.5 kg of sugar. (1 mark)

Answer 1

Solution:
The cost of 1 kg of sugar = ₹38.5
The cost of 1.5 kg of sugar = ₹38.5 × 1.5
= $\frac{385}{10}$ × $\frac{15}{10}$
$\begin{array}{cccc}& 3& 8& 5\\ \times & & 1& 5\\ 1& 9& 2& 5\\ 3& 8& 5& \\ 5& 7& 7& 5\end{array}$
(0.5 marks)

So,
$\frac{385}{10}$ × $\frac{15}{10}$= $\frac{5775}{100}$
= ₹57.75
Thus, the cost of 1.5 kg of sugar is ₹57.75.
(0.5 marks)