How many oz of peanuts must Shayna add to 8 oz. of mixed nuts containing 70% peanuts to make a mixture with 80% peanuts? Please Show your work Step-by-step, Thanks, and no links because they always pop up as inappropriate sites. If you give me a link I will not mark you brainless, and like/vote your answer. THANKS!
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Luigi is the first person to finish a 5k race and is standing 13 feet beyond the finish line. another runner, mario, is still running the race and has approximately 24 feet before he reaches the finish line. what is the distance between mario and luigi? explain through words, numbers or pictures how you found the answer.