Harry and Meg have some roses. 3/10 of the flowers are red roses, the rest are white roses. Harry gives 50% of the white roses away and buys 17 more red roses. They now have 121 roses in total. How many roses did they have at the start?
+108 160.
final total is 121 after adding 17 roses so after giving away half white total is 104
initial mix is 3/10 red and 7/10 white after giving away half white total us 6.5/10 or 13/20
Divide 104 by 13/20 104/13*20=8*20=160
