Question

Anthony earned $131 in tips last night while working at the restaurant. If his tips

Answer 1

Given:

Total income form tips = $131

His tips  consisted of $1 bills and $5 bills only.

Total number of bills = 47

To find:

The number of $5 bills.

Solution:

Let x be the number of $1 bills and y be the number of $5 bills.

Total bills : $x+y=47$            ...(i)

Total income : $x+5y=131$        ...(ii)

Subtract (ii) from (i), we get

$x+5y-(x+y)=131-47$

$x+5y-x-y=84$

$4y=84$

$y=21$

Therefore, the number of $5 bills is 21.