A = l*w
6112 = l*28
l = 6112/28
l = 218.2857143
k = 
using the ' laws of logarithms '
log x - log y = log (
)
logx = logy ↔ x = y
logk - log(k - 2) = log5
log (
=log 5
= 5
5(k - 2) = k
5k - 10 = k
4k = 10 ⇒ k =
= 
Given :
Heather spend 2/7 of her money buying presents.
She then had €48.65 left.
To Find :
The initial amount of money she had.
Solution :
Let, initial amount she had is €x.
So,

x = €68.11
Therefore, initially he had €68.11 .