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Dit: 1 jam 20 menit = .....?
Jawab:
1 jam 20 menit = 80 menit
120/1800 = 80/x
12/180 = 80/x
2/30 = 80/x
2 . x = 80 . 30
2x = 2400
x = 2400/2
= 1200
Jadi, dalam 1 jam 20 menit Wahyu dapat mengetik 1200 kata