Answer:
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Forming equation: 1 Mark
Equating equation according to question: 1 Mark
Steps: 1 Mark
Answer: 1 Mark
Given that
Tatesville has $x$ inches of rainfall in April, $(x+1.3)inches$ of rainfall in May, and $(2x+0.5)inches$ in June.
The total rainfall during these months will be the sum of these expressions.
Total amount of rainfall
$=x+(x+1.3)+(2x+0.5)inches$
$=x+x+1.3+2x+0.5inches$
$=4x+1.8inches$
Given that, rainfall in May is 2.5 inches.
Rainfall in May
$(x+1.3)=2.5inches$
$x+1.3=2.5$
$x=2.5-1.3$
$x=1.2inches$
On substituting the value of$x=1.2inches$ in the ecpression for total rainfall.
Total Rainfall
$=4x+1.8=4\left(1.2\right)+1.8=4.8+1.8=6.6inches$
So, the total rainfall over the three months is $6.6inches$