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:- 252 can be expressed as a product of primes as
A. 2 x 2 x 2 x 3 x 7
B. 2 x 2 x 3 x 3 x 7
C. 2 x 3 x 3 x 3 x 7
D. 3 x 3 x 3 x 3 x 7