Question

The cost of 2 puffs, 14 cups of coffee and 5 pizzas is 356. The cost of 20 puffs, 7 cups of coffee and 15 pizzas is 7830. Find the cost of 38 puffs and 25
pizzas. ​

Answer 1

Answer:

here is the answer to the answer 22995, that is the actual

Answer 2

Answer:

The cost of 38 puffs and 25 pizzas is 15,424.

Step-by-step explanation:

Assumption,

Let the cost of one puff be 'x'.

Let the cost of one cup of coffee be 'y'.

Let the cost of one pizza be 'z'

Given,

The cost of 2 puffs, 14 cups of coffee, and 5 pizzas are 356.

i.e. 2x + 14y + 5z = 356....(1)

The cost of 20 puffs, 7 cups of coffee, and 15 pizzas are 7830.

i.e. 20x + 7y + 15z = 7890...(2)

To find,

The cost of 38 puffs and 25 pizzas.

Calculation,

We multiply the equation (2) with 2, then we get:

⇒ 40x + 14y + 30z = 15,780...(3)

Now we subtract equation (1) from (3).

i.e. (40x + 14y + 30z) - (2x + 14y + 5z) = 15,780 - 356

⇒ (40x - 2x) + (14y - 14y) + (30z - 5z) = 15,424

⇒ 38x + 25z = 15,424

Therefore, the cost of 38 puffs and 25 pizzas is 15,424.

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