Question
The average weight of 20 boys is
48 kg. However, the weights of three boys, originally 46 kg, 44 kg, and 38 kg, were incorrectly recorded as 'k' kg, 'k+2' kg, and 'k−4' kg, respectively. When the correct weights are used, the average weight increases by 0.5 kg. Determine the value of 'k'.Solution
ATQ, (48 × 20 – k – (k + 2) – (k – 4) + 46 + 44 + 38)/20 = 48 + 0.5 (960 – k – k – 2 – k + 4 + 128)/20 = 48.5 1088 – 3k + 2 = 970 1090 – 3k = 970 3k = 1090 – 970 3k = 120 k = 40
- 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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