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Let us consider the time of the journey be t hrs, As we know, the distance is the same. According to the question 10 (t + 4.5/60) = 20 (t-4.5/60) 2 (t + 3/40) = 4 (t-3/40) 2t+ 3/20 = 4t-12/40 4t-2t = 3/20 + 12/40 2 t = 18/40 t=9/40 Distance = speed × time Distance = 10 (9/40 + 3/40) = 3 km
Marble is a metamorphic rock of:
NaCl has which kind of bonds?
Which of the following is a water soluble vitamin?
What is the primary advantage of superconductors?
What is the pH of a neutral solution at 25°C?
Naphthalene balls, commonly used as a pest repellent, are derived from which source?
The two metal ions that cause hardness to water are……………?
Match the following columns and choose the correct option:
Column I A. Leishmania donovani B. Trypanosoma gambiense C. Entamoeba histolytica D. W...
Which of the following is a synthetic polymer?
Which element is commonly used in nuclear reactors for producing electricity by nuclear fission?