Ques:- The smallest number that must be added to 803642 in order to obtain a multiple of 11 is
A. 1
B. 4
C. 7
D. 9
Ques:- In what ratio must a grocer mix two varieties of tea worth Rs. 60 a kg and Rs. 65 a kg so that by selling the mixture at Rs. 68.20 a kg he may gain 10%?
A. 3 : 1
B. 3 : 2
C. 3 : 4
D. 4 : 5