The answer would be: n=6.
Answer:
490
Step-by-step explanation:
280÷2 is 140.
The child can do 140 revolutions in a minute.
140 times 3.5 is 490
The multiplier is 4 (3*4=12, 4*4=16), so 10*4 is 40, therefore the ratio is 10:40
Answer:
B.
Step-by-step explanation:
The answer is B because 3/5 of 1/2 is less than 1/2. The equation that represents this problem is
3/5 x 1/2 = 3/10
3/10 < 1/2
Therefore, 3/5 is less than 1/2!
