Problema Solution
Halima has 21 coins whose total value is sh 72.there are twice as many five shilling coins as there are ten shilling coins. The rest are one shilling coins.find the number of ten shilling coins that halima has
Answer provided by our tutors
call f is the number of five shilling coins.
call t is the number of ten shilling coins.
call n is the number of one shilling coins.
so we have:
Quantity Eq: f + t + n = 21
Value Eq:5f +10t +n = 72
Quantity Eq: f = 2t
solving above set of equations, we obtain:
Number of 5 schilling coins = 6
Numberof 10 schilling coins= 3
Number of 1 schilling coins= 12