Answer :
Cost of 70 gram vanilla beans is $42, so Jacques pay $42 for his vanilla beans.
Cost based problem:
What information do we have?
Cost of 1 kg vanilla beans = $600
Amount of vanilla beans bought by Jacque = 70 gram
Cost of 1 g vanilla beans = [600/1000]
Cost of 1 g vanilla beans = $0.6 per gram
Cost of 70 gram vanilla beans = 70 × Cost of 1 g vanilla beans
Cost of 70 gram vanilla beans = 70 × $0.6
Cost of 70 gram vanilla beans = $42
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