Question

Radha saves and spends her salary in the ratio of 7:8 Find the percentage of her saving

Answer 1

based on the ratio the total salary=7+8=15
%of savings=7÷15×100=46.67%

Answer 2

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Here is the required answer : -
●There are two methods to solve this question :
1.)SHORT METHOD
Assume the total salary of Radha = 7+8 = 15
Now,
Money she saves = 7
Money she spends = 8

Now,

Percentage of her savings = (7/15)*100
=7*20/3
=140/3 %

2.)LONG METHOD
Ratio of salary Radha saves and spends = 7 : 8

Let us assume the salary of Radha 60 [We can assume any number but I am assuming 60 for convenience.]

Also,

Let the part of salary Radha saves be 7x.
Let the part of salary Radha spends be 8x.

Now,
We can write,

7x + 8x = 60
15x = 60
x = 60/15
x = 4

Now,
Salary she spends = 4*8 = 32
Salary she saves = 4*7 = 28

Now,

Percentage of her saving = (28/60)*100
=(7/15)*100
=7*20/3
=140/3 %

Hope my answer will be helpful to you dear.