Equations

Hong Kong

Stage 4 - Stage 5

Is $x=\frac{1}{4}$`x`=14 a solution of $x+\frac{2}{3}=\frac{11}{12}$`x`+23=1112?

Yes

A

No

B

Easy

< 1min

Is $x=\frac{7}{12}$`x`=712 a solution of $x-\frac{4}{9}=\frac{17}{36}$`x`−49=1736?

Easy

< 1min

Consider the relationship between the number of pink triangles $\left(p\right)$(`p`) and the number of columns $n$`n`.

Easy

2min

A racing car starts the race with $120$120 litres of fuel. From there, it uses fuel at a rate of $3$3 litres per minute.

Easy

4min

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