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If a boy walks in a park everyday.on the first day he will walk 11 km the next day he will walk 22 km so the number increases by 11km every day.So wow much will he walk in 2 weeks.

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On the 1st day, he walks 11 km, on 2nd day, 22 km, and so on...
rnSo, the sum= 11+22+33+44+.....+14*11
rn =11(1+2+3+4+......+14)
rn =11{14*15}/2=1155 km

The answer is 1155 km

The answer is 1155 km

1155

The answer is 77km