In what proportion must rice at Rs 50 per kg be mixed with rice at – McqOptions

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1.	In what proportion must rice at Rs 50 per kg be mixed with rice at Rs 70 per kg, so that the mixture be worth Rs 56 a kg ?
A.	7 : 3
B.	9 : 7
C.	11 : 13
D.	13 15
Answer» B. 9 : 7

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