tolong bantuannya genksssssssss

Presentase bunga selama 10 bulan
= 18 × 10/12.
= 15%.

Besar bunga selama 10 bulan
= 800.000 × 15/100.
= Rp120.000,00.

Besar tabungan Rithika seluruhnya
= 800.000 + 120.000.
= Rp920.000,00.