Question

Beverages	% of vitamin	% of minerals	% of micronutrients	Cost/250gm (In ₹)
Orange juice	20	10	40	7
Pineapple juice	15	20	10	10
Litchi juice	12	18	30	8

Which of these is the cheapest:

i) 200 grams of Litchi juice + 200 grams of Pineapple juice

ii) 300 grams of Pineapple juice + 100 grams of Litchi juice

iii) 100 grams of Pineapple juice + 100 grams of Litchi juice + 100 grams of Orange juice

iv) 300 grams of Pineapple juice + 100 grams of Orange juice

• A. 300 grams of Pineapple juice + 100 grams of Litchi juice
• B. 100 grams of Pineapple juice + 100 grams of Litchi juice + 100 grams of Orange juice
• C. 200 grams of Litchi juice + 200 grams of Pineapple juice
• D. 300 grams of Pineapple juice + 100 grams of Orange juice

Answer 1

The correct option is B

100 grams of Pineapple juice + 100 grams of Litchi juice + 100 grams of Orange juice

100 grams of Pineapple juice + 100 grams of Litchi juice + 100 grams of Orange juice will be the cheapest on calculation.

Cost of 100g orange juice = $\frac{7}{250}\times$ 100 = ₹ 2.8

Cost of 200g orange juice = 2.8 $\times$ 2 = ₹ 5.6

Cost of 300g orange juice = 2.8 $\times$ 3 = ₹ 8.4

Cost of 100 g pineapple juice = $\frac{10}{250}$ $\times$ 100 = ₹ 4

Cost of 200g pineapple juice = 4 $\times$ 2 = ₹ 8

Cost of 300g pineapple juice = 4 $\times$ 3 = ₹ 12

Cost of 100g litchi juice = $\frac{8}{250}\times$100= ₹ 3.2

Cost of 200g litchi juice = 2 $\times$ 3.2 = ₹ 6.4

Cost of 300g litchi juice = 3 $\times$ 3.2 = ₹ 9.6

Based on the above data

100 grams of Pineapple juice + 100 grams of Litchi juice + 100 grams of Orange juice will be the cheapest on calculation i.e. ₹ 10.