Question

see the picture and answer the question urgently

Answer 1

I think they are taking about the interest

solution:
let the amount be saved at 10% be x

10x/100 + 15(12000-x)/100 = 12(12000)
10x + 180000 -15x = 144000
5x = 36000
x = 7200

the amount to be saved in 10% is 7200
the amount to be saved in 15% is 4800

Answer 2

Given that sum of amount = 12000 rupees.

Let the amount he saves at 10% be x.

Then the amount he saves at rest 15% will be (12000 - x).

Given that he gets 12% of the total amount = 12000 * 12/100

                                                                         = 1440.

0.10x + 0.15(12000 - x) = 1440

10x + 15(12000 - x) = 144000

-5x = -36000

x = 7200.

Then 12000 - x = 12000 - 7200

                          = 4800.



Amount at 10% = 7200.

Amount at 15% = 4800.


Hope this helps!