One peach weighs 65 grams. You buy a box containing 100 peaches. If the cost of peach per kilogram is AED.10, how much you have to pay?

Given:

Weight of one peach = 65 grams

Number of peaches in a box = 100

Cost of peach per kilogram is AED.10.

To find:

How much you have to pay?

Solution:

We know that,

Total weight of box = Weight of one peach × Number of peaches in a box

                                 = 65 × 100

                                 = 6500 grams

1000g = 1 kg

1 g = 0.001 kg

6500 g = 6500 × 0.001 kg

             = 6.5 kg

Now,

Cost of 1 kg = AED.10

Cost of 6.5 kg = 6.5 × AED.10

                        = AED.65

Therefore, you have to pay AED. 65.

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2