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1. The price of tea being increased by 20%, a man reduces his consumption by 20%. By how much percent will his expenses for tea be decreased?
2. b\% of a is 10. The value of a is:
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1. The price of tea being increased by 20%, a man reduces his consumption by 20%. By how much percent will his expenses for tea be decreased?
2. b\% of a is 10. The value of a is:
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