The lunch bill for the 7 guests came to $154. If Jessica paid for 3 of the guests and Aaron paid for the other 4 guests, how much did each pay?
Let, 'x' be the amount that each guest came with, then the total amount=7x,
and 7x=154 dividing both sides by 7,
x=22,
3x=66R.s paid by jessica
4x=88R.s paid by aaron