Question

Mary bought 2 vangaurd sheets each measuring 70 cm by 90 cm. She cut out square cards of identical size from the vangaurd sheets such that there was no wastage.
a) What is the largest possible length she cut out?
b)What is the total number of square cards she cut out such that there was no wastage.
c) If Mary wants to use the cards she cut out as revision card for 8 of her subjects equally, how many cards can she use for each subject? How many cards will be left over?

Answer 1

Write the ratio in simplest form.

20 in : 46 in

Answer 2

(a) GCF(70,90) = 10
(b) 90/10 * 70/10 = 63
(c) 63/8 = 7 with a remainder of 7