A rectangular courtyard, the sides of which are in the ratio of 4:3, cost Rs.600 for paving at 50 p per m2; find the length of the diagonal of the courtyard? Choose the correct choice.
A) 17 m  B) 45 m  C) 54 m  D) 77 m  E) 34 m
1 m2 ---- 1/2   ? ----- 600 =&gt; 1200 m2   4x * 3x = 1200 =&gt; x = 10   Answer: 45 m
<result>B</result>
A rectangular courtyard, the sides of which are in the ratio of 4:3, cost Rs.600 for paving at 50 p per m2; find the length of the diagonal of the courtyard?