(BRAINLIEST IF CORRECT AND SHOWS WORK) To make his famous chocolate cake, a baker uses chocolate that is 75% cocoa. Because his supplier delivered 100 lb of chocolate with 70% cocoa, The baker needs to melt and mix the delivery with chocolate that has 90% cocoa. How much of the 90% chocolate should he use?
If Jessica takes 2/5 hour to repaint 5/8 of her wall, how long will it take to paint her whole wall?
Answer:
38.4 or 38 2/5 minutes
Step-by-step explanation:
2/5×60 = 24
24÷5 = 4.8
4.8×8 = 38.4 minutes