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Start learning 50% faster. Sign in nowLet the distance to be travelled be ‘x’ km Time taken when speed is 24 km/hr = (x/24) hours Time taken when speed is 40 km/hr = (x/40) hours According to the question, (x/24) – (x/40) = 2 Or, 5x – 3x = 2 × 120 Or, 2x = 240 km Or, x = 120 km Time taken to travel 120 km with speed of 24 km/hr = 120/24 = 5 hours Therefore, he started at 12 – 5 = 7 a.m. Therefore, required speed to reach the destination at 11 a.m. or 4 hours = 120/4 = 30 km/hr
In monocotyledonous seeds the outer covering of endosperm separates the embryo by a proteinous layer called as
Chemically most of the sand grains are
Which of the following represents photosynthesis?
The situation in a production process where each successive unit of input contributes more output than the previous unit is explained by the law of:
Which of the following statement is incorrect about tropic and nastic movements in plant?
Which of the following statements is/are true about the relationship between soil fertility and nutrient cycling?
Statement A: Nutrient cycling r...
Saline soil having
(A) pH<8.5
(B) E.C.>4
(C) ESP<15
(D) Physical condition - Flocculated
Choose the correct answer from the options given below:
Tomato damping off is caused due to ____
Match List I with List II :
Choose the correct answe...
The Rural Infrastructure Development Fund (RIDF) was established by which organization?