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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
Ques:- Find out the wrong number in each sequence:
125, 123, 120, 115, 108, 100, 84
125, 123, 120, 115, 108, 100, 84
A. 84
B. 100
C. 115
D. 123