At a fundraising meeting kalonzo gave sh.469333 while onyango gave sh.250000.if total collection was ah.900000.how much was contributed by other guests

Dear student,
Total collection = sh.900000
kalonzo contribution = sh.469333
onyango contribution = sh.250000

Others contribution = total collection - (kalonzo contribution+onyango contribution)
Others contribution = sh.900000 - (sh.469333 + sh.250000) = sh.180667

Therefore, the contribution by other guests = sh.180667
Regards.