Miss penny inherits £680 she decides to save some and spend some the ratio of saving to spending is 9:8 how much does she save and how much does she spend
save is 9 out of (9+8) = 9/17 of total
spend is 8 out of (9+8) = 8/17
Save = 9/17 x 680 = £ ........
Spend = ..........