a firm is comprised of partners and associates in a ratio of 2 : 61 . if 60 more associates were hired , the ratio of partners to associates would be 4 : 137 . how many partners are currently in the firm ?
"the ratio 2 : 61 = 4 : 122 so the ratio changed from 4 : 122 to 4 : 137 . 137 - 122 = 15 which is 1 / 4 of the increase in 60 associates . the ratio changed from 16 : 488 to 16 : 548 . thus the number of partners is 16 . the answer is c ."
multiply(divide(60, subtract(multiply(137, 2), 61)), 2)