Tinapay ng Bayan charges Php 20 for each special tinapay with an additional charge of Php 10 for the customized plastic bag which can hold as many as 20 pieces of special tinapay. How many special tinapay can Juan bring home if his money is only Php 820? Write a rule that best describes the problem
Answers
Given : charge of Php 10 for the customized plastic bag which can hold as many as 20 pieces of special tinapay.
To Find : How many special tinapay can Juan bring home if his money is only Php 820
Solution:
Tinapay ng Bayan charges Php 20 for each special tinapay with an additional
Let sat special tinapay Juan bring home = 20J
Cost = 20J x 20 = 400J
Plastic Bags Required = J or Roundup(J)
Cost = 10J or 10 Roundup(J)
400J + 10J = 820
=> 410J = 820
=> J = 2
J is integer hence J and Roundup(J) both are same
special tinapay Juan bring home = 20 x 2 = 40
special tinapay bought = T
generalized Rule
Cost = 20T + 10 x Roundup (T/20)
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