please solve this problem
Answers
Answer:
Let the price of one puff be = x
Let the price of one cup of coffee be = y
Let the price of one pizza be = z
2x + 14y + 5z = 356
=> y = (356 - 5z - 2x)/14
20x + 7y + 15z = 830
=> y = (830 - 15z - 20x)/7
=> y = y
=> (356 - 5z - 2x)/14 = (830 - 15z - 20x)/7
=> 356 - 5z - 2x = 1660 - 30z - 40x
=> 1304 = 25z + 38x
That mean, this is the price of 25 pizzas and 38 puffs.
Answer: Rs. 1304
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Answer: Rs. 1304
Step by step explanation:
Let us assume the price of one puff be a , the price of one cup of coffee be b and the price of one pizza be c
Thus, As per the Ques,
2a + 14b + 5c = 356
=> b = (356 - 5c - 2a)/14
Now,
20a + 7b + 15c = 830
=> b = (830 - 15c - 20a)/7
.°. b = b
Now,
=> (356 - 5c - 2a)/14 = (830 - 15c - 20a)/7
=> 356 - 5c - 2a = 1660 - 30c - 40a
=> 1660 - 356 = 30c - 5c + 40a - 2a
=> 1304 = 25c + 38a
Thus, this will be the price of 25 pizzas and 38 puffs.
Final Answer: Rs. 1304