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Question

The average maximum temperature for 7 days from the 12th September to 18th September is $$35^\circ C$$ and that for 7 days from 13th to 19th September is $$34^\circ C$$. From this we can conclude that


A
Maximum temperature on 19th is 1C less than that for 12th September
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B
Maximum temperature on 12th is 1C less than that for 19th September
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C
Maximum temperature on 19th is 7C less than that for 12th September
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D
None of the above
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Solution

The correct option is B Maximum temperature on 19th is $$7^\circ C$$ less than that for 12th September
The average maximum temp from 12th sept to 18th sept  is 35 and The average maximum temp from 13th sept to 19th sept  is 34
Then total temp from 12th sept to 18th sept =35$$\times$$7=245
And  total temp from 13th sept to 19th sept =34$$\times$$7=238
Then diff=245-238=7
So Maximum temperature on 12th is7 $$^{0}$$  less than that for 19th September
7
77

Mathematics

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