Question
The current ages of A and B are in the ratio of 4:7. Six
years from now, the ages of B and C will be in the ratio of 2:3. If the average of the present ages of A, B, and C is 44 years, what is the difference between the current ages of A and C?Solution
Let the present ages of A and B are 4x years and 7x years respectively. Age of B after six years = 7x + 6 years Age of C after six years = (7x + 6) × 3/2 = ‘10.5x + 9’ years Present age of C = 10.5x + 9 – 6 = ‘10.5x + 3’ years According to question: 4x + 7x + 10.5x + 3 = 3 × 44 21.5x + 3 = 132 21.5x = 129, x = 6 So the present age of A = 4 × 6 = 24 years Present age of C = 10.5 × 6 + 3 = 63 + 3 = 66 years So the desired difference = 66 – 24 = 42 yearsÂ
- Select the correct mirror image of the given figure when the mirror is placed to the right side of the figure.
Select the correct mirror image of the given combination when the mirror is placed to the right side of the figure.
Select the correct mirror image of the given combination when the mirror is placed at ‘MN’ as shown.
Choose the correct image of the given question from the given options.
Select the correct mirror image of the given combination when the mirror is placed at MN as shown below:
Identify the correct mirror image of the following figure when mirror is placed to the right of the given figure.
Select the correct mirror image of the given combination when the mirror is placed at ‘PQ’ as shown.
If a mirror is placed on the line XY, then which of the answer figures is the mirror image of the given figure?
If a mirror is placed on the line MN, then out of the option figures which figure will be the mirror image of the question figure?
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