susi mempunyai manik 50 butir, 4/5 hilang. brp sisanya

manik sisa = 1 - manik hilang
= 1 - 4/5
= 5/5 - 4/5
= 1/5 bagian

manik sisa = 1/5 × 50 = 50/5 = 10 butir

Jadi manik susi tersisa 10 butir.

4/5 × 50 = 40
50 - 40 = 10