two men a and b start from place x walking at 4 ½ kmph and 5 ¾ kmph respectively . how many km apart they are at the end of 7 ½ hours if they are walking in the same direction ?
"rs = 5 ¾ - 4 ½ = 1 ¼ t = 7 ½ h . d = 5 / 4 * 15 / 2 = 75 / 8 = 9 3 / 8 km answer : c"
add(multiply(add(7, divide(const_1, const_2)), subtract(add(5, divide(const_3, 4)), add(4, divide(const_1, const_2)))), const_2)