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Couple of math questions?
I have been writing a few practice exams for an up coming test and am having some issues with two of the questions.
Please show how you work out the problem so I will know how to do it on the test. Thanks in advance!
In an electronic sale, a television was reduced by one-third from the original price. What was the original price if the new sales price is $70?
The answer is $105
In a pizza eating contest a man can eat an eighth of his body weight in 45 minutes. If the man weighs 80kg, how much can he eat in 30 minutes?
The answer is 6 2/3
1 Answer
- KalashLv 46 years agoFavorite Answer
1) Let the original price be x
You are saying it is reduced by 1/3 from the whole
= x - 1/3 x = 70
2/3 x = 70
x = 3/2 x 70
x = 105 $
2) You mean to say he can eat 10 kg in 45 minutes = 2/9 kg in a minute.
In 30 minutes = 2/9 x 30
= 60 / 9
= 6 x 2/3 minutes