Question

five puffs and two samosas cost is rs 48.the cost of a puff is twice the cost of a samosa. find the cost of a puff in rupees

Answer 1

let puff be p and let samosa be s

5p+2s=48

p=2s

substitute p=2s into 5p+2s=48:

10s+2s=48

12s=48

s=4

cost of puff=2*4=8rupees

Answer 2

Define x:

Let the cost of a samosa be x

The cost of a puff is 2x

Solve x:

5(2x) + 2x = Rs 48

12x = 48

x =4

Find the cost of a puff:

Puff = 2x = 2(4) = Rs 8

Answer: A puff costs Rs 8