Task 4: One year ago, Gill was five times as old as her horse. One year from now the sum of their ages will
be 22.
(0)State the proper variables for the above.
(ii)Derive suitable simultaneous equations.
(iii) Solve the equations and find how old is Gill and how old is her horse now.
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Equations:
g-1 = 5(h-1)
g+1 + h+1 = 22
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Rearrange::
g - 5h = -4
g + h = 20
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Subtract and solve for "h":
6h = 24
h = 4 yrs (horse's age now)
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Solve for "g"::
g = 20-h = 16 yrs (Gill's age now)
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