Question

If 11.25m of a uniform iron rod weighs 42.75kg, what will be the weight of 6m of the same rod?

• A. 22.8
• B. 21.8
• C. 22
• D. 23.8

Answer 1

The correct option is A

22.8

Let the required weight be $x$ kg.

Then less length, less weight.

$\therefore$ 11.25:6::42.75:$x$

$\to$11.25 $\times x$ = 6 $\times$ 42.75

$\to x$ = $\frac{6\times 42.75}{11.25}$

$x$ = 22.8