Ques:- In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively. So as to get a mixture worth Rs. 16.5/kg?
A. 3 : 7
B. 5 : 7
C. 7 : 3
D. 7 : 5
Ques:- Which of the commodities listed below is the highestforeign exchange earner for India?
A. Tea
B. Coffee
C. Coal
D. Iron ore