50.5k views
6 votes
Can you show working out for both parts? ​

Can you show working out for both parts? ​-example-1

1 Answer

8 votes

Answer :-

a) = Let cement, sand and stone in the concrete be x, 2x and 3x,

Each bag of dry concrete is 30 kg,

so,

x + 2x + 3x = 30

or, 6x = 30

so, x = 5

Now,

one bag contaings 2×5 = 10 kg of sand.

He buys just enough sand,stone and cement to make 50 bags of dry concrete,

1 bag = 10 kg sand

50 bags = 10 × 50 kg sand = 500 kg of sand

So,

He buys 500 kg of sand.

b) =

1 bag contains

5 kg of cement, 2×5 = 10 kg of sand and 3×5 = 15 kg of stone,

so,

25 kg of cement = 5.50 euro

5 × 50 kg of cement = 5.50/25 × 250 euro = 55 euro

20 kg of sand = 2 euro

500 kg of sand = 2/20 × 500 euro = 50 euro

15 kg of stone = 3.9 euro

15 × 50 kg = 3.9/15 × 750 euro = 195 euro

Total for 50 bags, he spent 50 + 195 + 55 euro = 300 euro.

He sold it for 396 euro.

His profit percent = (396 - 300)/300 × 100%

So, His profit percent = 32%.

User Vaibhav Bajpai
by
8.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories