book Maths Puzzle Numerical Ability

-3[9(x-4)+5x]-8{3[5(3y+4)]-12}

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book Other Question

Toh-toh has 83 coins worth P10.70. Some are 10 cents and the rest are 25 cents. How many of each kind does he have? Find two numbers, given that the second is 3 times the first. If you multiply the first number by the second number and the second number by 4, the sum of the products is 420.