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
let the number of ten shilling coins are x
then number of five shilling coins will be twice of x that is 2x
remainin coins will be 21-(x+2x) = 21-3x are one shilling coins
total money halima has = 10*x + 5*2x + (21-3x)*1 = 72 shillings
=> 10x+10x+21-3x = 72 shillings
=> 17x=72-21 = 51
=> x=3 coins
so halima has 3 coins of 10 shilling each . (answer)