in may mrs lee ' s earnings were 60 percent of the lee family ' s total income . in june mrs lee earned 40 percent more than in may . if the rest of the family ' s income was the same both months , then , in june , mrs lee ' s earnings were approximately what percent of the lee family ' s total income ?
"let in may lee family ' s total income = 100 in may mrs lee ' s income = 60 in may rest of the family ' s income = 40 in june mrs lees income = 60 * 140 / 100 = 84 in june total income = 84 + 40 = 124 % of mrs lee ' s income = 84 / 124 = 67.74 ( b )"
multiply(divide(add(const_100, 40), add(add(const_100, 40), const_100)), const_100)