Explanation

Polythene is a thermoplastic because it softens when heated and can be reshaped.

It is formed by polymerization of ethene molecules.

Explanation

مٹی برباد کرنا یعنی کسی کو ذلیل و رسوا کرنا۔

اس محاورے میں عزت خاک میں ملانے کا مفہوم شامل ہے۔

Explanation

Gymnastics has the highest injury rate due to intense physical demands.

Common injuries include fractures, sprains, and dislocations.

Explanation

She said that she could speak French fluently.

"Can" changes to "could" in reported speech.

The rest of the sentence stays the same.

Explanation

Correct sentence: "Under a spread chestnut tree, the children play."

"Under" shows the position beneath the tree.

Explanation

مجاز مرسل میں لفظ اپنے حقیقی معنی کے بجائے کسی اور متعلقہ معنی میں استعمال ہوتا ہے، لیکن اس میں تشبیہ کا عنصر شامل نہیں ہوتا۔

مثال: "بادشاہ کا حکم آیا" یہاں بادشاہ سے مراد اس کا حکم ہے، یعنی سبب اور مسبب کا تعلق پایا جاتا ہے۔

Explanation

Let's assume the retail price is 100.

The distant price is 20% less than the retail price:

Distant price = 100 - (20% of 100)

= 100 - 20

= 80

James purchased the book at a 30% discount on the distant price:

Discount = 30% of 80

= 0.3 × 80

= 24

Price James paid = 80 - 24

= 56

As a percentage of the retail price:

(56/100) × 100 = 56%

Explanation

Let's break it down step by step:

Let the principal amount be P.

According to the problem, the amount becomes 3 times itself in 20 years, so the interest earned is 2P (since 3P = P + 2P).

The simple interest formula is: Interest = (Principal × Rate × Time)/100

We know that Interest = 2P and Time = 20 years. Let's denote the rate as R.

So, 2P = (P × R × 20)/100

Simplifying, we get: R = 10%

Now, let's find the time it takes for the amount to become double (i.e., interest = P):

P = (P × 10 × Time)/100

Time = 10 years

Explanation

Given:

Capacity = 50000 litres = 50 cubic meters (since 1 cubic meter = 1000 litres)

Length (l) = 2.5 m

Depth (h) = 10 m

Let's use the formula for the volume of a cuboid:

Volume = length × breadth × height

50 = 2.5 × breadth × 10

Now, solve for breadth (b):

50 = 25b

b = 50/25

b = 2 m

Explanation

To find the value of 39/26:

39/26 = 1.5

= 3/2