Five times the age of Teena is 10 more than 4 times the age of Minu find the ages if the product of their ages is 30 .
Answers
Answer:
Teena's age is 6 years and Minu's age is 5 years.
Step-by-step explanation:
Given :
Five times the age of Teena is 10 more than 4 times the age of Minu. The product of their ages is 30.
To find :
the ages
Solution :
Let the present age of Teena be x and Minu be y.
Their product = 30
xy = 30
x = 30/y
According to the question,
5x = 4y + 10
5(30/y) = 4y + 10
150/y = 4y + 10
150 = 4y² + 10y
4y² + 10y - 150 = 0
2(2y² + 5y - 75) = 0
2y² + 5y - 75 = 0
Solving it,
2y² + 15y - 10y - 75 = 0
y(2y + 15) - 5(2y + 15) = 0
(2y + 15) (y - 5) = 0
=> 2y + 15 = 0 ; y = -15/2
=> y - 5 = 0 ; y = 5
Age can not be negative. Hence, y = 5
xy = 30
5x = 30
x = 30/5
x = 6
Therefore, Teena's age is 6 years and Minu's age is 5 years.
Step-by-step explanation:
-. Choose the correct answer:
-) Meristematic tissue
Dermal tissue
Tissues that bring about overall growth and repair in plants are
c) Vascular tissue
d) Ground tissue
Dermal tissue
Tissue that forms the outer covering are called as
.) Meristematic tissue
c) Vascular tissue
d) Ground tissue
Stomata are present in this layer.
c) Endodermis
d) all the above
Epidermis
Mesodermis
Gum is secreted by
Dermal layer
Meristematic cell
?
c)xylem
d) phloem
Parenchyma that contains chloroplast is called
c) sclerenchyma
d) collenchyma
aerenchym
Storage tissue
Fill the missing sequence
ell
?