Question

The cost of 5 Kg of onions is Rs. 2556. What is the cost of 1 Kg onions?
pls help me
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Answer 1

Answer:

The cost of 1 kg onions in 511.2

Answer 2

Answer:-

Method 1: Unitary Method:-

(Recommended)

Cost of 5 kg onions = Rs. 2556

Or,

5 kg = 2556

→ 1 kg = 2556/5

→ 1 kg = Rs. 511.2

Method 2: Direct Proportion:-

We know,

x/y = k (constant) in case of direct Proportion.

[Because when the content increases, prince also increases.]

Let the value of 1 kg onion be = Rs. n

[x (weight) - 5 kg - 1 kg

y (price) - 2556 - n]

Thus,

1/n = 5/2556

→ 5n = 2556

→ n = 511.2

Method 3: Taking the price as a variable (by forming a linear equation with one variable):-

Let the price of one kg onion be = Rs. (x)

Cost of 5 kg onions = 2556 Rs.

Here,

Total cost = (Weight)•(Price of onion per kilogram)

or,

5x = 2556

→ x = 2556

→ x = 511.2

Final Answer: Cost of one kilogram of onion was 511.2 rupees.