12. CBQ - Cost and Quantity of vegetable

Question:

4 m.

A customer visits a local market where the prices of vegetables vary directly in proportional to their weight. At one stall, she finds that 7\(kg\) of potato is \(₹\)504. The price remains uniform for any quantity purchased.

Use the information to answer the following questions.

1. If \(a : b = c : d\), which of the following is ALWAYS true?

\(a \times b = c \times d\)
\(a \times c = b \times d\)
\(a \times d = b \times c\)
\(d \times c = a \times b\)

2. What is rule of three?

\(d = \frac{ab}{c}\)
\(d = \frac{ac}{b}\)
\(d = \frac{bc}{a}\)
\(d = \frac{ad}{b}\)

3. What will be the cost of 28\(kg\) of potato?

\(₹ 2011\)
\(₹ 2021\)
\(₹ 2026\)
\(₹ 2016\)

4. What quantity of potato can be purchased for \(₹\)1296?

\(16 \ kg\)
\(18 \ kg\)
\(20 \ kg\)
\(21 \ kg\)

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