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Economist GMAT
Every year, during Tom's birthday, his grandmother kisses him as many kisses she kissed him during his previous birthday, less his age (a kiss for each year). How many kisses did Tom receive from his grandmother on his 15th birthday?
1) Tom received 144 kisses from his grandmother during his first (age 1 year) birthday.
2) On his 11th birthday, Tom received 10% less kisses from his grandmother than he did on his 10th birthday.
OA D
Every year, during Tom's birthday, his grandmother kisses him as many kisses she kissed him during his previous birthday, less his age (a kiss for each year). How many kisses did Tom receive from his grandmother on his 15th birthday?
1) Tom received 144 kisses from his grandmother during his first (age 1 year) birthday.
2) On his 11th birthday, Tom received 10% less kisses from his grandmother than he did on his 10th birthday.
OA D
