Question
The average weight of 8 persons is increased by 2.5 kg,
when a person whose weight is 56 kg, is replaced by a new comer. Find the weight of new comer?Solution
Let N be the weight of the new comer. x be the average weight of persons. 
On solving, N = 76 kg Alternative Method After including the New comer total weight increased by = 2.5 × 8 = 20 kg i.e., the weight of the new comer = 56 + 20 = 76kg
What will come in the place of question mark (?) in the given expression?Â
? X (62 - 20) + 60 X 5 = √1296 X 25 - 35 X 43...
(12% of 1250 + 85% of 400) x 10 = ?2
√ [? x 11 + (√ 1296)] = 16
√441 * 7 – 10% of 250 + ? = 140% of 120
(7/5) × (3/4) × (5/9) × (6/7) × 3112 = ?
What value should come in place of the question mark (?) in the following question?
45 × 2 + 180 ÷ 6 − 12 = ? Â
168Â Â Â Â Â 163Â Â Â Â Â Â 153Â Â Â Â Â Â 138Â Â Â Â Â 118Â Â Â Â Â ?
...√ (12+√ (12+√ (12+ ⋯ ∞ ))Â
What is the value of 7/9-11/12+12/16-1/8?
If the weight of 1 liter of water is 1 kilogram, then the volume of 0.1 gram of water is how many cubic millimeters.
