corinna has a photo which is 9cm wide and 6cm high. she woild like to enlarge it to a width of 15cm. the ratio of width to height has to remain the same. how high will the photo be?
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Answered by
2
let it's height will be x.
so,
9 cm: 6 cm :: 15 cm : x.
= 9 cm * x = 15 cm* 6cm
9 cm x=90 cm ^2
x = 90 cm ^2/ 9 cm
x = 10 cm.
so,
9 cm: 6 cm :: 15 cm : x.
= 9 cm * x = 15 cm* 6cm
9 cm x=90 cm ^2
x = 90 cm ^2/ 9 cm
x = 10 cm.
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Answered by
5
Let the height be h
as given
When width is 9 cm
then height is 6 cm
that means
Width : height
9 : 6
Now
For the same ratio ,
Width is 15cm
then height be h
So,
15 : h
by equating both
9 : 6 :: 15 : h
product of mean = product of extrem
6 × 15 = 9 × h
90 / 9 = h
10 = h
height = 10 cm
as given
When width is 9 cm
then height is 6 cm
that means
Width : height
9 : 6
Now
For the same ratio ,
Width is 15cm
then height be h
So,
15 : h
by equating both
9 : 6 :: 15 : h
product of mean = product of extrem
6 × 15 = 9 × h
90 / 9 = h
10 = h
height = 10 cm
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