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. 16.50 kg?
Choose the correct choice:  A) 7:3  B) 3:7  C) 4:6  D) 5:7  E) 8:9
Required rate = 3.50 : 1.50 = 7 : 3.   7:3NSWER 7:3
<result>A</result>
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. 16.50 kg?