Jane and sali cycled along the same 63 km route. jane took 3.5 hours to cycle the 63 km. sali started to cycle 4 minutes after jane started to cycle. sali caught up with jane when they had both cycled 30 km. jane and sali both cycled at a constant speeds. work out sali's speed in km/h.

Sali's speed was 18.75 km/h.

Step-by-step explanation:

Jane took 3.5 hours to cycle the 63 km.

As,   , so the speed of Jane will be:  

Suppose, the speed of Sali is   km/h

Sali caught up with Jane when they had both cycled 30 km.

So, the time required for Jane to cycle 30 km and the time required for Sali to cycle 30 km  

Given that, Sali started to cycle 4 minutes or after Jane started to cycle. So, the equation will be.......

Thus, the speed of Sali was 18.75 km/h.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column