A child has three different kinds of chocolates costing rs.2, rs.5 and rs.10. He spends total rs.120 on the chocolates. What is the minimum possible number of chocolates, he can buy, if there must be atleast one chocolate of each kind?
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7
Answer:
17
Step-by-step explanation:
2 & 5 areco prime numbers
anount spent is mutiple of 10
to spend in multiple of 10 it is necessary to buy 5 rs chocolates
and 2 rs 5 chocolates
and rest can be bought rs 10 chocolates
rs 2 chocolates = 5
rs 5 chocolates = 2
rs 10 chocolates = 10
total minimum chocolates = 17
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