Question
The average age of 22 girls is 40 years. If the age of
two more girls is added the average decreases by 2.5 years. What is the sum of the age of new girls?Solution
Total age of 22 girls = 22 × 40 = 880 years  If the age of two more girls is added the average decreases by 2.5 years,  ∴ Total age of 24 girls = 37.5 × 24 = 900 Now, the sum of the age of new girls = 900 – 880 = 20 years
"Golden Rice" refers to the rice rich in:
The intercalary meristem in plants results in ____
Tips of ecological pyramid is occupied by
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In which fertilizer highest nitrogen is found?
Building machinery and implements are examples ofÂ
Which weed is classified as a parasitic weed and is commonly found affecting crops like sugarcane and legumes?
Match List I with List II
Choose the correct answer ...
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Iron is absorbed by plants in which of the following forms?
(a)Â Fe2+
(b)Â Fe4+
(c)Â Fe
(d)Â Fe3+