A small stall records its sales over four days. The sales on the first day are $\$x$. The sales on

Question

A small stall records its sales over four days. The sales on the first day are $\$x$. The sales on the second day are $25\%$ more than those on the first day. The sales on the third day are $\$10$ less than those on the second day. The sales on the fourth day are twice those on the first day.

Write down expressions, in terms of $x$, for the sales on the second, third and fourth days.
[3]
The average daily sales over the four days are $\$52.50$. Form an equation in $x$ and solve it.
[3]
Hence, find the total sales on the second and fourth days.
[1]

Accepted Answer

(a) $1.25x,\quad 1.25x-10,\quad 2x$ (b) $x=40$ (c) $\$130$

Linear Equations and Inequalities - Applications of Linear Equations in Real Life

Linear Equations and Inequalities - Applications of Linear Equations in Real Life

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