The problem
Amanda, Chen, and Mark shared some money in the ratio 2: 4: 9. Mark got £84 more than Amanda. How much money did Chen get?
Amanda, Chen and Mark shared some money in the ratio 2: 4: 9. Mark got £84 more than Amanda. How much money did Chen get
Unit 4.4 Percentages
The solution
Amanda = 2 parts( 2x) , Chen = 4 parts( 4x), Mark = 9 parts ( 9x).
Mark got £84 more than Amanda => 9x = 2x +84
=>9x -2x = 84
=> 7x = 84
=> x = 12
Amanda => 2x = 2 x 12 = £44
Chen => 4x = 4 x 12= £48
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The solution
Amanda = 2 parts( 2x) , Chen = 4 parts( 4x), Mark = 9 parts ( 9x).
Mark got £84 more than Amanda => 9x = 2x +84
=>9x -2x = 84
=> 7x = 84
=> x = 12
Amanda => 2x = 2 x 12 = £44
Chen => 4x = 4 x 12= £48
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