Estimate each product : 1/7 x 20
2 answers:
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Let the oranges cost = x
Let the apples cost = y
According to given conditions, equation becomes:
.... (1)
.....(2)
Multiplying equation (1) by 8 and equation (2) by 12 to get y
96x+48y=43.04 .... (3)
96x+60y=44.16 .... (4)
Now subtracting both equations we get,
12y = 1.12
y = 0.093
Hence, cost of 1 apple = $0.093
As 12x+6y=5.38
12x+6(0.093)=5.38
12x=4.822
x = 0.40
Hence, cost of 1 orange = $0.40
The two cities will be 2.9 inches apart on the map.
Step-by-step explanation:
Given scale of map is;
1 inch = 80 miles
Ratio of inch to miles = 1:80
Actual distance between Austin and Corpus = 232 miles
Let,
x be the distance between Austin and Corpus on map.
Ratio of inch to miles = x:232
Using proportion;
Scale ratio :: Actual ratio
Product of mean = Product of extreme
Dividing both sides by 80
The two cities will be 2.9 inches apart on the map.
Keywords: ratio, proportion
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