Anna, Laura and David each earn the same monthly salary. Each month,
Anna saves 19% of her salary and spends the rest of it
Laura spends 17/20 of her salary and saves the rest of it
amount of salary David saves : amount of salary he spends = 2:8
Work out who saves the most of their salary each month.
Pls help me with an explanation

David saves more money than Laura and Anna and this can be determined by using the given data and converting that data into percentages.

Given :

Let the total amount of money Anna, Laura, and David each earn be 'x'.

Now, according to the given data Anna saves 19% of her salary and spends the rest of it. So, the amount of money Anna saved is:

= 19%

It is also given that Laura spends 17/20 of her salary and saves the rest of it. So, the amount of money Laura saved is:

= 15%

It is given that amount of salary David saves : amount of salary he spends = 2:8. So, it can be written as 20/100:80/100. So, the amount of money David saved is:

= 20%

David saves more money than Laura and Anna.

For more information, refer to the link given below:

link

David, 20%

Step-by-step explanation:

Anna saves 19%.

Laura spends 17/20 , or, 85/100=> Laura saves 15/100; 15%.

amount of salary David saves : amount of salary he spends = 2:8,

or, 20/100 : 80/100

=> David saves 20/100;  20%.

David saves the most, (20%).

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

step-by-step explanation: