Post only one question at a time, please.
56 is what decimal part of 70? Just divide 56 by 70 and leave your answer in the form 0.x.
60 is 5/12 of what number? Let the number be x. Then (5/12)x=60. Mult. both sides by 12 to eliminate the fraction (5/12). Write out the resulting new equation. Now divide both sides of this equation by 5 to obtain the value of x.
