Number of items of each kind from total count and total value

This type of question, asked 3 times: 9 Sep 2024 S1, 12 Sep 2024 S1, 13 Sep 2024 S1. All 3 questions below, oldest first.

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Question 1
9 Sep 2024 S1
59 $100$
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Question 2
12 Sep 2024 S1
70 $A payment of ₹120 is made with ₹10, ₹5 and ₹2 coins. A total of 25 coins are used. Which of the following is the number of ₹10 coins used in the payment?$
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Question 3
13 Sep 2024 S1
60 $At a cafe, Rama bought drinks for her 7 friends at ₹240. Some of them wanted coffee, while others wanted black tea. A regular cup of coffee cost ₹40 and a regular cup of black tea cost ₹ 30. How many cups of tea did she purchase?$
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Question 1