Question
The average age of a class of 25 girls is 20 years. If 7
new girls having average age of 12 years join the class, then the average age of the class becomes:Solution
Total age of 25 girls = 25 × 20 = 500 years Total age of 32 girls = 500 + (7 × 12) = 500 + 84 = 584 years Therefore new average age = 584/32 = 18.25 years
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
? * 4.89 = (410.15 ÷ 13.97) % of 6190 - 1342.77
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
(9/10 of 3999.79) - √2499.83 + (17.81% of 1199.81) = ?
(1963.33 ÷ 6.5 - 193.99)/? = 753.02 ÷ 26.98
960.11 ÷ 23.98 × 5.14 – 177.9 = √?Â
What will be the approximate value of the following questions.
(√143.74 + 29.89% of 720.27) × (5/9 of 539.79) = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
If 4tan4 + 9 – 12tan2 = 0, then find the value of cot.
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