Answer:
<em>Ivan gets £90 more than Tanya.</em>
Step-by-step explanation:
The <u>ratio of Ivan and Tanya's shares</u> is 
Suppose, Ivan's share
and Tanya's share 
The <u>total amount of money</u> is £150. So, the equation will be.....

So, Ivan's share
and Tanya's share 
Now, 
Thus, Ivan gets £90 more than Tanya.