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Ishaan is 2 times as old as Christopher.35 years ago, Ishaan was 7 times as old as Christopher.How old is Christopher now?

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Twenty less than a number is of least 15.Twice the différence between a number, x, and forty-five is three times the number.61 times a number minus 83 is equal to-59 less than a numberFour consecutive integers sum to 278.An amount of \$37, 000 is borrowed for 14 years at 4.75 interest, compounded annually. If the loan is paid in full at the end of that period, how much must be paid back?