b is inversely proportional to c . If b is 2 when c is 10 , find b when c=5 .

Question

b  is inversely proportional to  c . If  b  is 2 when  c  is 10 , find  b  when  c=5 .

Quizplus · Accepted Answer

When two quantities are inversely proportional, it means that when one quantity increases, the other decreases at a rate such that their product is constant. Given $b \propto \frac{1}{c}$, when $b = 2$, $c = 10$, so their product is $2 \times 10 = 20$. To find $b$ when $c = 5$, we set up the equation $b \times 5 = 20$, solving for $b$ gives $b = 4$.

B Is Inversely Proportional to C