An order of small fries costs $1.20 less than an order of large fries.

Three small fries and two large fries cost a total of $8.90. Find the

cost of an order of small fries and the cost of an order of large fries.

and the 2nd word problem i need help is

Jamal is twice as old as Priya was three years ago. In three years,

Priya will be as old as Jamal is now. How old are Jamal and Priya

now?

Note- Could you explain it in a easier way so i could understand it