Question

The cost of 3 kg of sugar is Rs 120. How much will 45 kg of sugar cost?​

Answer 1

Given :-

• Cost of 3 kg sugar is Rs. 120

To Find :-

• Cost of 45 kg sugar

Solution :-

❒ First we will find out cost of 1 kg sugar and then of 45 kg by using the unitary method .

$\sf \implies 3 kg = Rs. 120$

$\sf \implies 1 \; kg = \dfrac{120}{3}$

$\sf \implies 1 \; kg = Rs. 40$

➼ Finding cost of 45 kg sugar :-

$\sf \implies 1 \; kg = Rs. 40$

$\sf \implies 45 \; kg = 45 \times 40$

$\sf \implies Rs. 1800$

∴ Cost of 45 kg sugar is Rs. 1800

Answer 2

Answer:

The cost of 3kg of sugar is= ₹120

The cost of 1kg of sugar is= ₹120/3

The cost of 45kg of sugar= ₹120/3×45

$\frac{120}{3} \times 45 \\ \\ ⇒ \frac{5400}{3} \\ \\ ⇒₹1800$

Therefore, The cost of 45kg of sugar is ₹1800