Mathematics 0580 · IGCSE · Ratio and proportion

Ratio and proportion — practice question

$t$ varies inversely with the square of $(x + 1)$. If $x = 2$, then $t = 5$.

(a)[2]

Express $t$ using $x$.

(b)[2]

When $t = 1.8$, determine the positive value of $x$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$t=\dfrac{k}{(x+1)^2}$” …