Maths
posted by Melissa on .
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??

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. 
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?