Answer :
Answer:
40 seconds
Step-by-step explanation:
Ratio of 15:30 = 1:2
20:x
x = 20 x 2 using ratio, also stop putting these Maths challenge qs on website.
x = 40 :)
Answer:
40 seconds
Step-by-step explanation:
Ratio of 15:30 = 1:2
20:x
x = 20 x 2 using ratio, also stop putting these Maths challenge qs on website.
x = 40 :)