Maths Problem 2

2. Sione uploaded a presentation to his blog but it was too big. In the HTML code he saw that the size was 920  pixels wide by  648 pixels high. He thinks if he reduces it to ¾ of the size it is, it should fit. What dimensions does he need to change in the HTML code?

690 pixels wide and 486 pixels high

230 pixels wide

920 divided by 4 =

(92 divided by 4 = 4 x 20 = 80  4 x 3 = 12 4 x 20 + 4 x 3 = 92)

4 x 200 = 800

4 x 30 = 120

4 x 200 + 4 x 30 = 920

230 x 4 = 920

162 pixels high

648 divided by 4 =

(64 divided by 4 = 4 x 10 = 40, 4 x 6 = 24, 4 x 10 + 4 x 6 = 64)

4 x 100 = 400

4 x 60 = 240

4 x 100 + 4 x 60 = 640

4 x 2 = 8

640 + 8 = 648

162 x 4 = 648

690 pixels wide

230 = ¼

¾ = 230 x 3

230 x 3 = 690

486 pixels high

162 = ¼

¾ = 162 x 3

162 x 3 = 486