Question

Bunty and Bubly go for jogging every morning. Bunty goes around a square park of side 80m and Bubly goes around a rectangular park with length 90m and breadth 60m. If they both take 3 rounds, who covers greater distance and by how much?

Answer 1

Hint: First find the distance of each of the first rounds then multiply by 3 to each of the distances then compare them and get results.

Complete step-by-step answer:
In the question we are told about two people Bunty and Bubly who go jogging every morning. It is said that Bunty goes to a square park of 80m for jogging while Bubly goes to a rectangular park of dimension 90m length and 60m breadth. They both take 3 rounds of their respective park, we have to find who covers more distance and by how much.
So, lets first find the distance travelled by Bunty
As we know he goes to square park of side 80m so the distance 1 round will be 4a=4( 80m)=320m (where a is side of square)
Now for 3 rounds the distance will be 320m x 3 = 960m
Now we will find for the distance travelled by Bubly
As we know she goes to rectangle park of dimension 90m length and 60m breadth so the distance travelled in 1 round will be 2(length+breadth)=2( 90m + 60m)= 300m
Now for 3 rounds the distance will be 300m x 3 = 900m
Hence the distance travelled by Bunty is 960m and that of Bubly is 900m.
Therefor Bunty travels more by (960 – 900) or 60m
Hence, Bunty travels more by 60m

Note: Students should remember the formula of perimeter of square and rectangle which is 4 x (side of square) and 2(length + breadth) respectively to calculate distance of 1 round. After calculating perimeter we can proceed further according to question requirement.