Question
The present ages of 'A' and 'B' are in the ratio of
3:7. The difference between their current ages is 12 years. How much percent older will 'B' be than 'A' three years from now?Solution
Let the present ages of 'A' and 'B' be '3x' years and '7x' years, respectively. So, 7x - 3x = 12 Or, 4x = 12 So, x = 3 So, present age of 'A' = 3 X 3 = 9 years And present age of 'B' = 7 X 3 = 21 years So, three years hence from now, ages of 'A' and 'B' will be 12 years and 24 years, respectively. So, required percentage = {(24 - 12)/12} X 100 = 100%
What will come in the place of question mark (?) in the given expression?
(63 - ?) ÷ 5 + √625 = 19 X (9 - 6)
- What will come in place of (?), in the given expression.
(4² + 6²) × 2 = ? What will come in the place of question mark (?) in the given expression?
(40/25) X 80 - ? = 45% of 300 - 5525.6% of 250 + √? = 119
1220 ÷ 61 ÷ 5 + 450 of 20% - 70 = √ ?
Simplify the expression:
(5x + 15) / (x² + 3x)
What will come in the place of question mark (?) in the given expression?Â
435 ÷ 29 X 792 ÷ 44 = √(? + 14) + 35 + 221 ÷ 17
...192.251 + 326.233 + 125.021 + 19.273 = ?
36% of 640 – 12.5% of 352 + 25% of 640 = ? – 48% of 432
Simplify the following expressions and choose the correct option.
18 * 15 - {3/5 of 250 + 72}
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