exam Maths Puzzle Numerical Ability

6x - 1 / 5 - 2x / 3 = 3

written as:

6x - 1 2x
------ - -- = 3
5 3

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exam Other Question

Lynn invests 10,000$. in one account, he earns 6% interest, in the other, he earns 4.5%. How much did he invest in each account if he makes 570$ in one year?

PLEASE HELP!!!!!!!!!!!
A change machine contains nickels, dimes, and quarters. There are 75 coins in the machine, and the value of the coins is $7.25. There are 5 times as many nickels as dimes. Find the number of coins of each type in the machine.