Question

for each of the following express the first quantity as a percentage of the second quantity 25 second , 3.5min

Answer 1

Step-by-step explanation:

25 sec how much percent of 3.5 min

=> 3.5 min = 3 × 60 + 0.5 × 60

= 180 + 30 = 210 sec

now

percentage =>

(25 × 100)/210 = 2500/210 = 250/21 = 11*19/21 ℅

or 11.90 ℅ approx

Answer 2

Step-by-step explanation:

3.5 min = 3×60 +.5×60 = 210

25 seconds given

25 × 100 = 2500

2500 / 210 = 11 190 / 210

= 11 19 / 21 %