.... 7 : 11 respectively. If equal quantities of the alloys are melted to form a third alloy C, the ratio of gold and copper in C will be :
(a) 5 : 7
(b) 5 : 9
(c) 7 : 5
(d) 9 : 5
ANS (C) 7 : 5
CA FOUNDATION
CHAPTER 1 RATIO AND PROPORTION, INDICES, LOGARITHMS
(5-6 MARKS)
THIS IS "MATHS WITH MAGIC" SERIES.
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