Explanation

Cost of 25 toys=₹500

Cost of 1 toy =500/25=₹20

now,

the cost of 75 toys=75 x20=₹1500

Explanation

A perfect square is a number, from a given number system, that can be expressed as the square of a number from the same number system.

Explanation

20cm is the correct answer

The perimeter of the rectangle=2(l+w)=120 cm l+w=120/2=60 cm The length of the rectangle=40 cm The width of the rectangle=60-40=20 cm  

 

 

Explanation

A linear Scale is a line which is divided into equal parts.

Explanation

Zero is a real number because it is an integer.

Integers include all negative numbers, positive numbers, and zero.

Real numbers include integers as well as fractions and decimals.

Zero also represents the absence of any negative or positive amount.

Explanation

Let third number is x. Then first no.20%ofx=20x100 Second number=50%ofx=50x100 Percent of first no of second no,=20x10050x100×100=2×10020= 40%

Explanation

Divide 220 by 660 = 1/3

 

Explanation

600 ÷ 15000 × 100

= (600 × 100) ÷ 15000

= 60000 ÷ 15000

= 0.4

- 600=(x/100)15000 - 600/15000= x/100 - 600*100/15000=x - 60000/15000=x - 60/15= x - 4=x ans= 4%

 

Explanation

Given terms are as follows:

Hence, the expression becomes

Substituting the value of  and   in the above derived equation, we get,

Therefore, the value of  is equal to be 2

Explanation

let the age of the younger sister be X and rene=x+6 after10 years younger sister age=x+10and rene=x+10+6 x+10+x+16=50 2x+26=50 x=50-26/2=12 rene=18 years younger sister=12years ND18-5-2023