Diketahui :
Sepeda + becak = 30buah
roda becak + roda sepeda = 78buah
Ditanya :
Jumlah becak? Jumlah sepeda?
Dijawab :
S = sepeda ; B = becak
s+b = 30 maka s = 30-b
2s + 3b = 78
2(30-b) + 3b = 78
60 -2b + 3b = 78
b = 78 - 60 = 18
s = 30-b
s = 30 - 18 = 12
Jadi jumlah sepeda 12buah dan becak 18buah
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Verified answer
Diketahui :
Sepeda + becak = 30buah
roda becak + roda sepeda = 78buah
Ditanya :
Jumlah becak? Jumlah sepeda?
Dijawab :
S = sepeda ; B = becak
s+b = 30 maka s = 30-b
2s + 3b = 78
2(30-b) + 3b = 78
60 -2b + 3b = 78
b = 78 - 60 = 18
s = 30-b
s = 30 - 18 = 12
Jadi jumlah sepeda 12buah dan becak 18buah
jumlah becak =30
jumlah roda= 78
jumah roda becak= 3
3x30= 90 ?
jr = 78
sedangkan banyak roda becak 90 semuanya
jdi tak ada jawaban nya
maaf klo slh