Question

a photograph 8cm high and 6cm wide is enlarged to give a poster 18cm wide. What is the height of the poster? Calculate the ration of the area of the photograph to the area of the poster.
Thank you so much for your help,

Answer 1

Answer:

1:9

Step-by-step explanation:

height of the poster: (8/6)×18=24

area of photo: 8×6=48

area of poster: 18×24= 432

ratio of area of photograph to area of poster

= 48:432

= 1:9

to double check answer:

48/8 + 18/6= 9 (and this tallies with the answer above)

hope this helped!! :)

Answer 2

..hight.............wide

8 ..................6

x................18

x=18/6x8=24cm

heights: 24cm

x=8/6x18=24cm

Area of Photograph=8x6=48cm2

Area of poster=24xl8=432cm2

Ratio = 48:432=1:9