A snapshot $${\text{1}}\frac{7}{8} \times 2\frac{1}{2}$$ is to be enlarged so that the longer dimension is 4. What will be the dimension of the shorter side ?
A. $${\text{2}}\frac{3}{8}$$
B. $${\text{2}}\frac{1}{2}$$
C. $${\text{3}}$$
D. $${\text{3}}\frac{3}{8}$$
Answer: Option C
Solution(By Examveda Team)
Let the dimension of the shorter side be xMore is the longer side, More is the shorter side (Direct proportion)
$$\eqalign{ & \therefore 2\frac{1}{2}:4::1\frac{7}{8}:x \cr & \Leftrightarrow \frac{5}{2}x = 4 \times \frac{{15}}{8} \cr & \Leftrightarrow x = \left( {\frac{{15}}{2} \times \frac{2}{5}} \right) \cr & \Leftrightarrow x = 3 \cr} $$
Related Questions on Chain Rule
A. Rs. $$ {\frac{{{\text{xy}}}}{{\text{d}}}} $$
B. $${\text{Rs}}{\text{.}} {xd} $$
C. $${\text{Rs}}{\text{.}} {yd} $$
D. Rs. $$ {\frac{{{\text{yd}}}}{{\text{x}}}} $$
A. $$29\frac{1}{5}$$
B. $$37\frac{1}{4}$$
C. 42
D. 54
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