Question

Two points A and B are 500 km apart on a straight road. Tow motorcycle start at the same time from A and B towards each other. The speed of one motorcycle is 8 km/h more than the other. If after 4 hours the distance between them is 36 kilometre. Find the respective speeds?​

Answer 1

Answer:

The distance between two motor cyclist would be length of hyper use which is square root of

(120−3x)2+(10x)2=1000x2−60×120x+1202

⇒1000x2−60×120x+1202

Now quadratic fraction f(x)=ax2+bx+c reaches the minimum or maximum when a is negative.

When x=2a−b=2×100060×120=3.6.

Step-by-step explanation:

The distance between two motor cyclist would be length of hyper use which is square root of

(120−3x)2+(10x)2=1000x2−60×120x+1202

⇒1000x2−60×120x+1202

Now quadratic fraction f(x)=ax2+bx+c reaches the minimum or maximum when a is negative.

When x=2a−b=2×100060×120=3.6.

Answer 2

Answer:

3.6

It is an answer.

I hope it was correct