Question

Simon spends 60% of his pocket money. If his pocket money is increased by 10% and his spending also increases by 10%, the money he saves will increase by:​

Answer 1

Answer:

no increase done in saving of money

Answer 2

Answer:

10%.

Step-by-step explanation:

Let the total pocket money of Simon is x.  

Simon spends 60% of x i.e. 0.6x.

So, his savings is (x-0.6x) =0.4x.

His pocket money increases by 10% and his spending also increases by 10%.

Hence, new pocket money is 1.1x and the new spending becomes (0.6*1.1)x=0.66x  

So, his new savings becomes, (1.1x-0.66x)=0.44x.

Hence the % increase in his savings will be, $\frac{0.44x-0.4x}{0.4x}*100=0.1*100 =10%$ (Answer)