1. Diagonals of a rhombus intersect to form
1 answer:
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Solution
Given
mean = 251
standard deviation = 33
(a)
Hence, X = 300
so.. as you can see, we use the decimal notation for the percentages... 65% is just 65/100 and 50% is just 50/100 and so on
so.. whatever the salted amounts are, we know they'll add up to (x+175)(0.50)
thus (0.30x) + (175)(0.65) = (x+175)(0.50)
solve for "x"