Question

Suresh, who runs a bakery, uses a conical shaped equipment to write decorative labels (e.g., Happy Birthday etc.) using cream. The height of this equipment is 7 cm and the diameter of the base is 5 mm. A full charge of the equipment will write 330 words on an average. How many words can be written using three fifth of a litre of cream?

Accepted Answer

E. Cone dimensions: height $h = 7$ cm, base radius $r = 0.25$ cm. Volume of cone = $\frac{1}{3} \pi r^2 h = \frac{1}{3} 	imes \frac{22}{7} 	imes (0.25)^2 	imes 7 = 0.45833	ext{ cm}^3$. 1 charge ($0.45833	ext{ cm}^3$) writes 330 words. Cream available = $\frac{3}{5}$ litre = $600	ext{ cm}^3$. Words written = $600 	imes \frac{330}{0.45833} \approx 432,000$ words. Since 432,000 is not in A-D (option D says 43200), option E (None of the above) is correct.

Bakery Conical Equipment Cream Writing

Explanation

Practise this under exam conditions