Tell and write the correct answers as quickly as possible. (a)1÷2 part of a sum is Rs 10, (i)the sum= (ii)1÷4 part of the sum = (b) part of the sum= 1÷3 part of a distance is 5km (i) the distance= (ii) 1÷5 part of the distance= I will give 100 points and mark at brainlist.