Q.141- The average weight of 3 men, A, B and C is 84 kg. Another man D joins the group and the average now becomes 80 kg. If another man E whose weight is 3 kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 kg. What is the weight of A ?A. 70 kgB. 72 kgC. 75 kgD. 80 kg Q.142- If the average of x and $$\frac{1}{x}$$ (x ≠ 0) is M, then the average of x2 and $$\frac{1}{x^{2}}$$ is :A. $$1-M^{2}$$B. $$1-2 M^{2}$$C. $$2 \mathrm{M}^{2}-1$$D. $$2 \mathrm{M}^{2}+1$$ Q.143- The mean high temperature of the first four days of a week is 25°C whereas the mean of the last four days is 25.5°C. If the mean of the whole week is 25.2°C then the temperature of the 4th day is :A. 25°CB. 25.2°CC. 25.6°CD. 25.5°C Q.144- Mukesh has twice as much money as Soham. Soham has 50% more money than Pankaj. If the average money with them is Rs. 110, then Mukesh has :A. Rs. 155B. Rs. 160C. Rs. 180D. Rs. 175 Q.145- Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20, than first number is :A. 25B. 21C. 23D. 28 Time is Up! Time's up