Given: The temperature at 12 noon was 10*C above zero . Tt decrease at the rate of 2*C/hr until midnight  To find: What  time would the temperature be 8*C below zero  Solution:At 12 noon, the temperature is 10 * CThe temperature decreases at the rate of 2* C per hour ... Read More

Given:√168To do: Simplify the surdSolution:$168 = 2 \times 2 \times 2 \times 3 \times 7$ $√168 = √(2 \times 2 \times 2 \times 3 \times 7) = 2√42$

Given :POQ is a line.Ray OR is perpendicular to line PQ. OS is another ray lying between rays OP and OR.To do :We have to prove that $ \angle ROS =\frac{1}{2} (\angle QOS -\angle POS)$Solution :Ray OR is perpendicular to line PQ.This implies, $∠ROP = 90°$ and $∠ROQ = 90°$Therefore, ... Read More

Given:  A shopkeeper sold a dressing table for ₹7512.75 at a profit of $\frac{77}{4}$%.To do: What was the cost price.Solution:Profit Percent Formula =$\frac{Profit \times 100}{CP}$ So, $\frac{77}{4} = \frac{[SP-CP] \times 100}{CP}$$\frac{77}{4} = \frac{[SP-CP] \times 100}{CP}$The given SP is Rs 7512.75. Now,   $\frac{77}{4} = \frac{[7512.75-CP] \times 100}{CP}$$CP = 4\frac{751275-100CP}{77}$$77\times CP = 30050300 -400CP$$77 ... Read More

1 kilometre or km = 1000 metres

A microorganism or microbe is an organism that is microscopic, which means too small to see with the naked eye. These may exist in its single-celled form or in a colony of cells.These are unicellular organisms.Bacteria, viruses, fungi, protozoa, and algae are some examples of microorganisms.The study of microorganisms is ... Read More

Liquid Pressure:All the liquids exert pressure on the base or bottom and walls of their container. All the liquid has weight. When we pour the liquid into a vessel, then the weight of liquid pushes down on the base of the vessel producing pressure.

The meaning of the word Paddy is, "unmilled rice". Paddy is the rice grain with husk. Rice plant is called paddy and rice is the seed of paddy. Paddy is the name of the crop and rice are the grains obtained from paddy.  Paddy crops are different from most other crops because ... Read More

The important characteristics of Living Beings are as follows: 1. Nutrition- It is the process of consuming foods to carry out the vital functions of the body for survival.   2. Respiration- It is the process where a living organism produces energy with the intake of oxygen and release ... Read More

Given:$\frac{12}{23}+56-78$ To do: Solve the expression Solution:Using BODMAS$\frac{12}{23}+56-78$ =$0.522 + 56 - 78$      [as $\frac{12}{23}$ = 0.522] = $56.522 -78$         [as $0.522 + 56 = 56.522$] = $- 21.478$     [as $56.522 -78 = -21.478$]