y x − r a t i o na l n u mb er 2 x − 2 = y 2 x − 2 x − r a t i o na l n u mb er 2 x − 2 + 3 x + 3 = 3 2 C ross m u lt i pl i c a t i o n 3 ( x + 3 ) = 2 ( 2 x − 2 + 3 ) 3 x + 9 = 2 ( 2 x + 1 ) 3 x + 9 = 4 x + 2 3 x − 4 x = 2 − 9 − x = − 7 ∣ ∗ ( − 1 ) x = 7 O r i g ina l n u mb er i s 2 ∗ 7 − 2 7 = 12 7
The original rational number is 12 7 . This is derived from the statement that twice the numerator is two more than the denominator and checking the conditions when 3 is added to both. The calculations led to finding that x = 7 and y = 12 .
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Jawaban:Harga jual produk tersebut adalah Rp 202.500Penjelasan:Gunakan rumus:Rumus Harga Jual:[tex]\text{Harga Jual} = \text{Harga Beli} + (\text{Persentase Keuntungan} \times \text{Harga Beli})[/tex]Diketahui:Harga Beli = Rp 150.000Keuntungan = 35% = 0,35Hitung Harga Jual:[tex]\text{Harga Jual} = 150.000 + (0,35 \times 150.000) = 150.000 + 52.500 = \boxed{Rp 202.500}[/tex]Jawaban:Harga jual produk tersebut adalah Rp 202.500