The ratio of earnings of A and B is 4:5. If the earnings of A increase by 20% and the earnings of B decrease by 20%, the new ratio of their earnings becomes 6:5. What are A's earnings?
Choose the correct choice from the following answers
A) 375099  B) 37500  C) 27899  D) 28778  E) 19911
Explanation:   Let length = x meters, then breadth = 0.6x   Given that perimeter = 800 meters   =&gt; 2[ x + 0.6x] = 800   =&gt; x = 250 m   Length = 250m and breadth = 0.6 * 250= 
<gadget id="calculator">0.6 * 250</gadget>
<output>150</output>
150m   Area= 250 * 150= 
<gadget id="calculator">250 * 150</gadget>
<output>37_500</output>
37500 \fn_jvn {\color{37500lue}m^{2}}   Answer: 37500
<result>B</result>
The ratio of earnings of A and B is 4:5. If the earnings of A increase by 20% and the earnings of B decrease by 20%, the new ratio of their earnings becomes 6:5. What are A's earnings?