Start learning 50% faster. Sign in now
Let the total journey be = 42 km (LCM of the denominator of 4/7, 5/6) At 10.30 am, Robert covers 4/7 of the whole journey i.e., 42 × 4/7 = 24 km At 4.00 pm, Robert covers 5/6 of the whole journey i.e., 42 × 5/6 = 35 km Therefore, Robert covers (35 - 24) = 11 km in (4.00 pm – 10.30am) = 5.5 hours. Then the speed of a Robert = 11/(5.5 ) = 2 km per hour Time taken by Robert to cover 24 km = 24/2 hours =12 hours Then the starting time of the journey is 10.30am - 12 hours = 10:30 pm
What is the primary use of calcium carbonate in antacid tablets?
Which enzyme is derived from soybeans?
What is the chemical formula of bleaching powder?
The pH value of an acidic solution is:
Which of the following substances are ozone-depleting?
Select the correct answer from the code given below.
I. ...
The nucleus of an atom consists of-
Which alloy is formed by mixing iron with carbon, nickel, and zinc?
Calcium cyanamide, used as a fertilizer, is commercially known as ______.
Which gas is commonly used to fill balloons?
What is the pH value of pure water ?