Kelereng dista 2,5 kelereng asis. Kelereng asis 3/4 kelereng sule.jmlh kelereng mereka 87. Berapa kelereng dista ?
Dista = D, Asis = A, Sule = S
D = 2,5 A dan A = (3/4) S —-> S = (4/3) A
D + A + S = 87 —-> 2,5 A + A + (4/3) A = 87
= 3,5 A + (4/3) A = 87
= (35/10) A + (4/3) A = 87
= (105/30) A + (40/30) A = 87
= (145/30) A = 87
=====> A = 18
D = 2,5 A ===> D = 2,5 (18)
D = 45
S = (4/3) A ===> S = (4/3) x 18
S = 24