Exam Maths Puzzle Algebra

Study the following table and answer the questions given below it.
Country --------- 1975 ------ 2030
1.United States - 141 ------- 382
2.Japan --------- 120 ------- 238
3.France -------- 67 --------

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Exam Other Question

I have no idea how to solve this problem, my mom needed the help! 6a/35b x 14b/15= 4a/25 please explain how to move the variables and multiply thanx! How many kg of salt at 42 paise per kg must a man mix with 25kg of salt at 24 paise per kg so that he may, on selling the mixture at 40 paise per kg gain 25% on the outlay?