Question

Four-fifths of a number is greater than two-thirds of a number by 4. Find the number.

Answer 1

Answer:

$(4 \div 5)x - (2 \div 3)x = 4 \\ ((4 \times 3 - 5 \times 2)x \div (5 \times 3) = 4 \\ (12 - 10)x = 4 \times (5 \times 3) \\ 2x = 4 \times 15 \\ 2x = 60 \\ x = 60 \div 2 \\ x = 30$