Let A’s speed be x km/hr and current speed be y km/hr. Downstream speed = x + y = 12 + 4 = 16 km/hr Upstream speed = x – y = 12 – 4 = 8 km/hr Let time taken for downstream be ‘t’ hours. Here distance is same. => 16 × t = 8 × (t + 3) => t = 3 hrs Distance = 16 × 3 = 48 km
Which of the following is an example of the Mollusca phylum?
Which of the following is a unicellular organism?
I. Amoeba
II. Paramecium
Mesothelioma is a type of cancer that most commonly affects the lining of the:
The fluid part of blood after removal of corpuscles is known as:
Which hormone is commonly known as the growth hormone?
Thiamine deficiency may result in :
Animals that lack a body cavity are known as:
The rhythmic contraction of the muscles lining the gut to push food along is called:
Which connective tissue connects muscle to bone?
What is the term for the development of fruit without fertilization or pollination?
