Answer:
90 calories
Step-by-step explanation:
Calories : quantity of food
there are 300 calories in 100 g of a certain food
300 calories : 100 g food
how many calories are there in a 30 g portion of food
Let x = number of calories
x calories : 30 g food
Equate both ratios
300 calories : 100 g food = x calories : 30 g food
300/100 = x/30
300 * 30 = 100 * x
9000 = 100x
x = 9000/100
x = 90
x = number of calories = 90 calories
The answer for this question is A
Answer:
45 cm
Step-by-step explanation:
perimeter of a square is 4 equal sides. each is therefore 200 cm ÷ 4 = 50 cm each.
if each side is dilated by a factor of 0.9
then 50 cm × 0.9 = 45 cm
