Jane and Sali cycled along the same 63km route. Jane took 3.5 hours to cycle the 63km. Sali started to cycle 4 minutes after Jane started to cycle.
Sali caught up with Jane when they had both cycled 30km.

Jane and Sali both cycled at 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

i believe the answer is d.

hope it you! : d

example 2 – simplify: step 1: completely factor both the numerators and denominators of all fractions. step 2: change the division sign to a multiplication sign and flip (or reciprocate) the fraction after the division sign; essential you need to multiply by the reciprocal. step 3 : cancel or reduce the fractions.