Mohon di bantu cara nya dong kakak..

56 × 6 = 336
57 × 8 = 456
58 × 3 = 174
59 × 5 = 295
60 × 6 = 360
( 336 + 456 + 174 + 295 + 360 ) = 1621
* 1621 ÷ 28 = 57,89 kg

Semoga membantu:)