Question

4. In a 1500 metre race, it was found that when Rajanish reached the finishing line, Tom was 120 metres behind him. How much distance had Tom run ?
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Answer 1

Step-by-step explanation:

Rajanish completed the race so he has ran 1500m

Tom is 120m behind Rajanish

=1500m-120m=1380m

Answer 2

Answer:

Total 1380 m distance had Tom run.

Step-by-step explanation:

Given,In a 1500 metre race

So, total distance

$= 1500 \: m$

Again given Rajanish reached the finishing line.

So,Rajanish covered total distance means 1500 m.

Now,Tom was 120 metres behind Rajanish.

That's mean for complete the race Tom need to cover 120 m more.

Therefore,Tom cover total distance

$= (1500 - 120) \: m \\ = 1380 \: m$

Here we applied Subtraction.

Know more about Subtraction,

1) https://brainly.in/question/31755065

2) https://brainly.in/question/13435792

Some important formulas of Mathematics,

(a + b)² = a² + 2ab + b²

(a − b)² = a² − 2ab − b²

(a + b)³ = a³ + 3a²b + 3ab² + b³

(a - b)³ = a³ - 3a²b + 3ab² - b³

a³ + b³ = (a + b)³ − 3ab(a + b)

a³ - b³ = (a -b)³ + 3ab(a - b)

a² − b² = (a + b)(a − b)

a² + b² = (a + b)² − 2ab

a² + b² = (a − b)² + 2ab

a³ − b³ = (a − b)(a² + ab + b²)

a³ + b³ = (a + b)(a² − ab + b²)