Brain Challenge

Week 316 (29th September 2023)

Week 316 (29th September 2023)

Fearne and Leo have both recently started new jobs.  

The ratio of Fearne’s hourly pay to Leo’s hourly pay is 6 : 5. 

After the first month both Fearne and Leo get an increase of £1.50 in their hourly pay.  

The ratio of Fearne’s hourly pay to Leo’s hourly pay after this increase is 13 : 11. 

Work out the hourly pay before the increase for both Fearne and Leo.   

Answer: 

The ratio of initial hourly rates is 6:5 which means their actual rate is in the ratio of 6x : 5x, where x is an unknown multiplier. 

When they receive their increase of £1.50, the ratio is then 6x + 1.5 : 5x + 1.5  

 Since that new ration is equal to 13/11, we can also say that:  

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13(6x+1.5) = 11(5x+1.5)            66x+16.5 = 65x+19.5 

If we take 65x and 16.5 from both sides, we get that x = 3.  

If we substitute x = 3 back into the original ratio of 6x:5x to find their original hourly rate so.. 

6(3) : 5(3) = £18 : £15  

Therefore, Fearne had £18 an hour and Leo had £15 an hour. 

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