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Volgvan
3 years ago
9

Sue sold 60 watermelons in a special 3 day sale. Each day she sold 6 more watermelons then the day before. How many watermelons

were sold on the 3rd day?
Mathematics
1 answer:
Sloan [31]3 years ago
5 0
X+ (x+6) + (x + 12) = 60
3x + 18 =60
3x=42
x= 14 (# sold the first day)
so if she sold 12 more than she did on the first day, on the last day the she sold 26
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Answer:

x=30cm

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Step-by-step explanation:

From the question we are told that

Sides difference \triangle x= 5cm

Area difference  \triangle a=326sq.cm

Let first square be A

Let second square be B

Generally the area of a square is mathematically given by

Area of a squareA=x*x=x^2

Area of a squareB=(x+5)^2=x^2+25+10x

Area \A - Area\ B =325

Therefore from the equations above

x^2+25x+10-x^2=325

10x=325-25

x=300/10

x=30cm

Therefore

Side of the first square

x=30cm

Side of the second square.

y=>30+5=35cm

Check answer

35^2-30^2=325

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