Question

Study the table below and answer the question that follows :

$\begin{array}{ccccc}\text{Beverages}& \text{\% of vitamin}& \text{\% of minerals}& \text{\% of micronutrients}& \text{Cost/250gm~(In)}\\ \text{Orange juice}& 20& 20& 40& 8\\ \text{Pineapple juice}& 15& 20& 10& 10\\ \text{Litchi juice}& 12& 18& 30& 8\end{array}$

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

• 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 = $\frac{8}{250}\times$ 100 = ₹ 3.2

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

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

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. ₹ 10.4