Question
The average height of each student in a class of 25
students is 150 cm. If 10 new students joined the class, then the average height of the each student in the class increases by 3 cm. Find the average height of 10 new students who joined the class.Solution
Total height of 25 students of the class = 150 × 25 = 3750 cm When 10 new students joined the class, average height of each student = 150 + 3 = 153 cm Total height of 35 students of the class = 153 × 35 = 5355 cm Average height of 10 new students who joined the class = {(5355 – 3750)/10} = 1605/10 = 160.5 cm
Which of the following statement is/are true?
Statement A: When a weed spp. is already resistance to a herbicide shows resistance to other herbic...
Monopoly and Oligopoly are the examples of?
What does FYM stands for?
With reference to micro-irrigation, which of the following statements is/are correct?
1. Fertiliser/nutrient loss can be reduced.
...The specific heat of quartz among the different soil constituents is the ___ ?
Weeds which are very short lived by nature are called:
Match the following meteorological instruments with their uses:
What is the floor space required for pregnant cow?
What is the type of farming done along the contour of sloping land to avoid soil erosion with slope less than 33%?
Choose the correct option
Statement I: Percolation ponds/tanks are constructed for effective recharge of groundwater
Statement II: Emergen...
Relevant for Exams:
