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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:- Among the following statements, the statement which is not correct is
A. Every natural number is an integer.
B. Every natural number is a real number.
C. Every real number is a rational number.
D. Every integer is a rational number.