مسئلة رياضية

google translate converts this to:  

Zakaria wants to buy a bicycle, so the grandfather paid 3/8 and 2/5,  

and the mother paid 1/8 of its price, and Zakaria paid the rest.  

السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ

3/8+2/5+1/8=9/10

So Zakaria payed 1/10