Book Maths Puzzle Algebra

1. In 1978, a kg of paper was sold at Rs25/-. If the paper rate increases at 1.5% more than the inflation rate which is 6.5% a year, then what will be the cost of a kg of paper after 2 years?

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Book Other Question

Solve for x e^(2In(2x)) = 4 I have to write the following in terms of In(x+2) and In(x+4) : In [(x+2)square root of x+4]