Average weight of each student, in a class of 70 students, is 86kg. If the ratio of number of boys and girls in the class is 4:3, respectively and average weight of each boy in the class is 92kg, then find the average weight of each girl in the class.
Number of boys in the class = 70 × (4/7) = 40 Number of girls in the class = 70 × (3/7) = 30 Let the weight of each girl in the class be ‘x’ kg. {(40 × 92) + (30 × x)} ÷ {30 + 40} = 86 Or, 3680 + 30x = 6020 Or, 30x = 2340 So, x = 78 Therefore, average weight of each girl in the class = 78kg
Consider the following statements:
1. The duration of the monsoon decreases from southern India to northern India.
2. The amount of annu...
Consider the following pairs:
Which of the pairs given...
With reference to ‘Changpa’ community of India, consider the following statements:
1. They live mainly in the State of Uttarakhand
2. ...
What is the total length of India – Pakistan border?
Which of the following statements is/are correct regarding the impact of climate change?
1. Sea-surface temperature of Indian Ocean may increase ...
Which of the following is the correct sequence of the mountain ranges of Himalayas when arranged from north to south?
Which Country shares the longest boundary with India?
Block Mountain is located at________
If you travel through the shola forests of western Ghats, you are likely to see which of the following features?
1. Epiphytes like Lichens
Hygrometer is for
