A labour earns rs 1980 in 12 days how much does he earn in 7 days in how many days will earn rs 2640
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he earn 1980 in 12 days.
so he earn 1980/12=165 in one days.
in 7 days he earn 7*165=1155
and he earn 2640 in 2640/165=16 days
so he earn 1980/12=165 in one days.
in 7 days he earn 7*165=1155
and he earn 2640 in 2640/165=16 days
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