Henry earns 1300 and spends 30% of the money = 30% X 1300 = 30/100 X 1300 = 30 X 13 = 390 so, he spends 39 on rent. he spends 12% of 1300 = 12/100 X 1300 = 12 X 13 = 156 so he spends 156 on bill. now he spends total (156 + 390 ) = 546 on rent and bill. so he was left with = (1300 - 546) = 754 here is another method he spends total (30% + 12%) = 42% on rent and bill. that means he spends on bill and rent = 42% of 1300 = 42/100 X 1300 = 42 X 13 =546 hence, he is left with = (1300 - 546) = 754
