Your family attended comic convention. each autograph cost $20 each photograph cost $50. your family buys a total of 5 autographs and photographs for a $160. how many photographs does your family buy

Question

How many photographs does your family buy

Answer 1

Method 1

160-(5x20)=160-100=60

$60-$50=$10

one photograph purchased with $10 balance.

Method 2

Let the number of photographs purchased be y .

(5x20)+(yx50)=160

100+50y=160

50y=160-100

50y=60

 y =60/50=1.2  

y=1 (rounding off )

one photograph was bought.