Question
Average age of a class of 25 students is 13 years.
Average age of the class is increased by 30 months if the age of the teacher is included. Find the age of the teacher.Solution
Sum of the ages of all the students in the class = 25 × 13 = 325 years Sum of the ages of the students along with teacher = 26 × 15.5 = 403 years So the age of the teacher = 403 – 325 = 78 years
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The ESP of saline soils is _____%
Which of the following actinomycetes is responsible for nitrogen fixation?
Soil health card with the tagline “Swasth Dharaa, Khet Haraa” was launched on ____.
Which soil property is least affected by the size and arrangement of soil particles?
What is the primary reason for the non-expanding nature of fine-grained micas within the 2:1-type minerals?
Toxicity of which element leads to the unavailability of iron and zinc
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Which of the following group of soil is the largest and most important group of India?
Which method measures soil moisture content by drying a sample in an oven and determining the percentage of moisture loss?
