Question
The average age of Neha and her uncle at present is 40
years. Neha's age 5 years from now will be one-fourth of the present age of her uncle. What is the current age of her uncle?Solution
ATQ,
Sum of present ages of Neha and her uncle = 40 Γ 2 = 80 years
Let the present age of Neha = x years
Then, present age of her uncle = (80 - x) years
According to the question,
(x + 5) Γ 4 = (80 - x)
β 4x + 20 = 80 - x
β 5x = 60
β x = 60 / 5 = 12
So, present age of Neha's uncle = 80 - 12 = 68 years
Determine the simplified value of the expression: 12 Γ 15 - 20 + 15 + 12 - 18 + 3 Γ 4 + 18.
(-251 Γ 21 Γ -12) Γ· ? = 158.13
Simplify: (23Γ32) Γ·6
(106 + 14)/15 = ?/5
If (3 Γ 144 β 252 Γ· 14) Γ· 18 = β1024 β x, then find the value of βxβ.
What will come in the place of question mark (?) in the given expression?
?% of 2480 + 15 Γ 34 = 1440
√144 × √121 + 25% of 600 = ? + 256
Find the simplified value of the given expression.
(1/4) of {64Β - 28 x 15 + 13 x 16 - 12.5 of 122}
2945 – 1508 + 3454 = ? + 2255