Question

Rahul wants to buy 4 L of lemon juice for his birthday party. He
sees the following 3 brands oflemon juice in a shop:
"Juice Lite', sold in 200 mL packs costing 15 each.
'Live Fit', sold in 250 ml bottles cos ng 18 each.
"Nature's choice', sold in 1 Litre packs, with a special offer of
2 packs for 150.
Which of the brands will be the cheapest option for him​

Answer 1

The cheapest option is Juice Lite.

• The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units. Always write the items that need to be computed on the right side and the things that are known on the left side to simplify things.
• In the unitary method, the value of a unit quantity is determined before the values of other units are determined. Direct variation and inverse variation are the two different sorts of variations it has.
• When there is a direct variation, an increase or decrease in one quantity will result in an equivalent rise or fall in the other. For instance, a rise in the quantity of commodities will result in higher costs.

Here,

Case 1: Juice Lite:

200mL costs (15 × 200) = 3000

I mL costs $\frac{3000}{200}$ = 15

then, 4L = 4000mL will cost (15 × 4000) = 60000

Case 2: Live Fit:

250mL costs (18 × 250) = 4500

I mL costs $\frac{4500}{250}$ =  18

then, 4L = 4000mL will cost (18 × 4000) = 72000

Case 3: Nature's choice:

1000mL costs (75 × 1000)

I mL costs 75

then, 4L = 4000mL will cost (75 × 4000) = 300000

Hence, the cheapest option is Juice Lite.

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