Paul buys a number of large sacks of fertiliser costing $ x each. He spends $ 27.
a) write down, in terms of x, an expression for the number of large sacks which paul buys.
b) Rula buys a number of small sacks of fertiliser. Each small sack costs $ 2 less than a large sack. Rula spends $ 25.
Write down in terms of x, an expression for the number of small sacks which Rula buys.
Answers
b)So lets take s as small sacks. Then the equation is S(x-2)=25.
Given: Paul buys a number of large sacks of fertiliser costing $ x each
To Find : expression for the number of large sacks which paul buys.
Solution:
Paul buys a number of large sacks of fertiliser costing $ x each
number of large sacks which paul buys = n
=> Cost of n large sacks of fertiliser = n * x $
Paul spends $ 27.
=> nx = 27
=> n = 27/x
27/x is the Expression for the number of large sacks which paul buys
Rula buys a number of Smaller sacks of fertiliser costing $ (x-2) each
number of large sacks which Rula buys = p
=> Cost of p smaller sacks of fertiliser = p * (x-2) $
Rula spends $ 25.
=> p * (x-2) = 27
=> p = 25/(x - 2)
25/(x - 2) is the Expression for the number of large sacks which Rula buys
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