>>1
I am a pen.

Mrs Yeo had 60% more books than Madam Lim.
Miss Tang had 25% fewer books than Mrs Yeo.
Madam Lim and Mrs Yeo gave some books to Miss Tang in the ration of 3:1.
As a result, Miss Tang had 1.5 times as many books as before.
Given that Mrs Yeo had 240 more books than Madam Lim in the end, how many books did Mrs Yeo give to Miss Tang?