Answer:
2:3
Step-by-step explanation:
divide each number in half :)
Say you have a number like
12.34
That is, 12 and 34 hundredths. 0.34 is the same as 34/100, so
12.34 = 12 + 34/100 = 1200/100 + 34/100 = 1234/100 = 617/50
If you have a number with repeating digits in the decimal, like
12.343434... (with 34 repeating forever)
we can let x be this number. Then
100x = 1234.343434...
If we subtract x from 100x, we can eliminate the repeating decimal part:
100x - x = 1234.343434... - 12.343434...
99x = 1234 - 12
99x = 1222
Then solving for x gives the decimal as a fraction:
x = 1222/99
1.5x + 0.2y = 2.68....(0.3)
1.6x + 0.3y = 2.98....(-0.2)
------------------------
0.45x + 0.06y = 0.804 (result of multiplying by 0.3)
-0.32x - 0.06y = - 0.596 (result of multiplying by -0.2)
----------------------add
0.13x = 0.208
x = 0.208/0.13
x = 1.6
1.5x + 0.2y = 2.68
1.5(1.6) + 0.2y = 2.68
2.4 + 0.2y = 2.68
0.2y = 2.68 - 2.4
0.2y = 0.28
y = 0.28/0.2
y = 1.4
well...there is one solution....(1.6 , 1.4)

<u>Mona starts from 68th stone</u>
<u>She jumps</u><u> </u><u>23</u><u> </u><u>stones</u><u> </u><u>ahead</u><u> </u>
<u>Then</u><u> </u><u>she</u><u> </u><u>jumps</u><u> </u><u>28</u><u> </u><u>stones</u><u> </u><u>back</u>

<em>Her final position=?</em>




- To find how much stones she is ahead or back we will Subtract 63 from 68 which was her initial position.

So, Mona will be <em><u>5</u></em><em><u> </u></em><em><u>stones</u></em><em><u> </u></em><em><u>behind</u></em><em><u> </u></em><em><u>from</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>starting</u></em><em><u> </u></em><em><u>stone</u></em><em><u>.</u></em>
☯️Hence, Option C is correct