10 / 21 of 3 / 5 of a number is greater than 4 / 7 of 1 / 5 of the same number by 36 . what is half of that number ?
"let no . be x 10 / 21 * 3 / 5 * x - 4 / 7 * 1 / 5 * x = 8 by further solving 30 x / 105 - 4 x / 35 = 36 18 x / 105 = 36 x = 210 we have to find x / 2 = 210 / 2 = 105 answer : a"
divide(divide(36, subtract(multiply(divide(const_4.0, 21), divide(5, 5)), multiply(divide(const_2.0, 3), divide(10, 7)))), 1)