Grades 7-8 Video Solutions 2025-2025_7-8

Video Transcription

Problem number 12. There are 5 hurdles in a 60m hurdles race. The first hurdle is after 12m.  The gap between any 2 consecutive hurdles is 8m. How far is the last hurdle from the finish?  Let's draw a diagram of what the hurdles look like.  Now, let's fill in the information we know. The whole race is 60m long. The first hurdle is after 12m, and the gap between any 2 consecutive hurdles is 8m.  Now, the question just asks what the missing distance is from the last hurdle to the finish.  Well, we can just subtract out the distances we know from the total length and we'll get the answer. That is 60 minus 12 minus 8 times 4.  We know 8 times 4 is 32, and 12 plus 32 is 44. So what we're really looking for is 60 minus 44, and that's equal to 16. So the answer is a 16m.

Video Summary

Problem number 12. There are 5 hurdles in a 60m hurdles race. The first hurdle is after 12m. The gap between any 2 consecutive hurdles is 8m. How far is the last hurdle from the finish? Let's draw a diagram of what the hurdles look like. Now, let's fill in the information we know. The whole race is 60m long. The first hurdle is after 12m, and the gap between any 2 consecutive hurdles is 8m. Now, the question just asks what the missing distance is from the last hurdle to the finish. Well, we can just subtract out the distances we know from the total length and we'll get the answer. That is 60 minus 12 minus 8 times 4. We know 8 times 4 is 32, and 12 plus 32 is 44. So what we're really looking for is 60 minus 44, and that's equal to 16. So the answer is a 16m.

Keywords

hurdles race

distance calculation

mathematics problem

race track

problem solving