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  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?

  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? Correct Answer 7:3

By the rule of alligation:

Cost of 1 kg pulses of 1st kindCost of 1 kg pulses of 2nd kind
Rs. 15 Mean Price
Rs. 16.50		 Rs. 20
3.50 1.50

[ src="https://www.indiabix.com/_files/images/aptitude/1-sym-tfr.gif" style="margin: 0px; box-sizing: border-box; outline: 0px; border: 0px; vertical-align: middle;"> Required rate = 3.50 : 1.50 = 7 : 3.

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