Hi all, ps help the following questions. Many tks and God Bless:)

(1) James wants to cover a floor measuring 90cm by 120cm with square tiles of the same size. Given that he uses only whole tiles, find

(a) the largest possible length of the side of each tile

(b) the number of tiles that are needed to cover the floor.

(2) A rectangular piece of copper plate measuring 320cm by 240cm is cut into identical small squares. The length of a side of each square is the largest possible length.

(a) find the length of a side of each square

(b) find the number of square copper plates formed.

(3) Lamp posts are put at intervals of 84m along a road and flowering plants are placed at intervals of 60m. The first flowering plant is placed at the foot of the first lamp post.

(a) how far along the road is next flowering plant that is placed at the foot of a lamp post?

(b) how many lamp posts and flowering plants are there in between before they are together for the second time.