Question

1'kindonoghwa and hawa divided their 200000000 in the ratio of 2;5 how much did more or less did kindonoghwa get

Answer 1

1) If you want to split something ina 2:5 ratio, you must break it into 2+5=7 pieces. Then, you assign 2 of these 7 pieces to one person and the 5 remaining pieces to the other, and they'll have 2/7 and 5/7 of the total. for a ratio of 2:5, as required.

So, kindonoghwa gets 2/7 of 200000000, which is approximately 57142857.14.

2) We have

$4\log_2(x)=4$

Divide both sides by 4:

$\log_2(x)=1$

This is equivalent to

$2^{\log_2(x)}=2^1 \iff x=2$