A, B and C invest in the ratio of 3 : 4: 5. The percentage of return on their investments are in the ratio of 6 : 5 : 4. Find the total earnings, If B earns Rs. 250 more than A :  Choose the most appropriate option:
A) 2348 B) 7250 C) 2767 D) 1998 E) 2771
Explanation:   A 7250 C   investment 3x 4x 5x   Rate of return 6y% 5y% 4y%   Return \inline \frac{18xy}{100} \inline \frac{20xy}{100} \inline \frac{20xy}{100}   Total = (18+20+20)= 
<gadget id="calculator">(18+20+20)</gadget>
<output>58</output>
\inline \frac{58xy}{100}   7250's earnings - A's earnings= \inline \frac{2xy}{100} = 250   Total earning = \inline \frac{58xy}{100} = 7250   Answer: 7250) Rs.7250
<result>B</result>
A, B and C invest in the ratio of 3 : 4: 5. The percentage of return on their investments are in the ratio of 6 : 5 : 4. Find the total earnings, If B earns Rs. 250 more than A :