enzymes are : a. vitamins b. proteins c. carbohydrates d. fats
If 1/x+1/y=k and 1/x- 1/y =k then find the value of y.
A young son work quickly for 2 hrs and prepares 16 items in a day. His old father works slowly for 8 hrs and prepare 24 items a day: a) son has more power b) son has more energy c) both have equal power d) both have...