Explanation

The mixture contains 12% copper, which means that 12% of the mixture's weight is copper.

We want to find out how many kg of mixture is required to get 69 kg of copper.

Let's say the weight of the mixture is x kg.

Since 12% of the mixture is copper, the weight of copper in the mixture is 12% of x, which is 0.12x.

We are told that the weight of copper is 69 kg, so we can set up the equation:

0.12x = 69

To solve for x, we can divide both sides by 0.12:

x = 69 / 0.12

x = 575

So, the weight of the mixture is 575 kg.

Explanation

Must: This is the modal verb that expresses necessity or obligation.

Explanation

Guddy  پر تکلف

Subtle ہلکا, نازک, نفیس

Explanation

Required capacity = HCF of 120 litres and 56 litres

= 8 litres = 8000 cc [∴ 1 litres = 1000 cc]

Explanation

Percentile indicates the percentage of scores below a given score.

If Student A scored 25 and Student B scored 75, then A is at the 25th percentile—meaning A scored better than 25% of students (assuming only A and B).

Explanation

Synthesis involves combining various pieces of information to form a coherent whole.

In this case, when a student assembles a picture diagram of the parts of the body

They are integrating different elements to create a complete and accurate representation.

Explanation

When a student requests a private meeting, it is important to honor their request and address their concerns in a confidential setting

Explanation

In gymnosperms, the ovule is covered by an integument, which is a protective layer.

Explanation

Rebuff (رد کرنا)

Accept (قبول کرنا)

Explanation

Empiricism is a philosophical approach that emphasizes knowledge derived from sensory experience and empirical evidence