Question
The sum of the ages of P, Q, and R is 120 years. If P is
10 years older than Q and R is 5 years younger than P, what is the age of Q?Solution
Let the age of Q be x years. Then the age of P = x + 10 years, And the age of R = (x + 10) - 5 = x + 5 years. The sum of their ages = 120, so: x + (x + 10) + (x + 5) = 120, 3x + 15 = 120, 3x = 105, x = 105 / 3 = 35 years. The age of Q is 35 years.
Find the simplified value of the given expression:
7 of 9 ÷ 3 × 5² + √81 – 14- Calculate the value of the following expression:
{(481 + 426) 2 - 4 × 481 × 426} = ?
Find the value of the expression:
18 + 12 – 4 × [22 + 6 – 2 × (38 – 23)]What value should come in the place of (?) in the following questions?
162 – 12 * 20 = 6 * ? - 3√8000
654.056 + 28.9015 × 44.851 – 43.129 = ?
150% of 850 ÷ 25 – 25 = ?% of (39312 ÷ 1512)
58% of 3300 - ?% of 2900 = 1740
What will come in the place of question mark (?) in the given expression?
(√441 + √729) X 8 = ? + 518 ÷ 2
What will come in place of the question mark (?) in the following expression?
?% of 600 + 15 × 28 = 30% of 1800
