Maths

A)One packet of biscuits cost $x and one cup of ice cream $y
B)One packet of biscuits and two cups of ice cream cost $8.00, while three packets of biscuits and one cup ice cream cost $9.00
1) write a pair of simultaneous equations in x and y to represent the given info above
Is the ans = 1x+2y=$8.00
3X+1y=$9.00
How do i find the cost of one biscuit and one cup of ice cream??

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  1. Those are the correct equations, but you do not have to write the "1" as a coefficient. In algebra, that just isn't done.
    Just solve these two equations:
    x + 2y = 8
    3x = y = 9
    You can rewrite the first equation as
    3x + 6y = 24
    By subtracting the 2nd eq from the 3rd), you eliminate x and get
    5y = 15
    Take it from there.

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  2. The longest loaf of bread measured 1.405 feet one and three fourths in inches. In length. It was cut into half slices thick. How many slices were there?

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