ABC26GN4791 · Volume and Surface Area

Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: · Marks: · Difficulty:

Given that 1 cu. cm of marble weighs 25 gms, the weight of a marble block 28 cm in width and 5 cm thick is 112 kg. The length of the block is

(a)26.5 cm

(b)32 cm

(c)36 cm

(d)37.5 cm

Answer

Answer (as printed): B

Explanation

Let length $=x \mathrm{cm}$. Then, $$x \times 28 \times 5 \times \frac{25}{1000}=112 \Rightarrow x=\left(112 \times \frac{1000}{25} \times \frac{1}{28} \times \frac{1}{5}\right) \mathrm{cm}=32 \mathrm{cm} .$$

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