Question
A boat covers a distance of 90 km downstream in 3 hours.
If the ratio of upstream speed to downstream speed of the boat is 3:9, then find the distance travelled by the boat in upstream in 6 hours.Solution
ATQ: Let the upstream and downstream speed of the boat be '3x' km/hr and '9x' km/hr, respectively. ATQ, 9x = (90/3) So, 'x' = 3.33 (approx.) So, upstream speed of the boat = 3x = 3 × 3.33 = 9.99 km/hr (approx. 10 km/hr) Required distance = 10 × 6 = 60 km
At what stage should maize seeds be harvested for optimal seed yield?
Polyembryony is useful in the propagation of
Antibiotics are produced from______.
Jelly in which fruit peels remain suspended is called as
Elasticity of supply refers to the degree of responsiveness of supply of a commodity to changes in its:
Which of the following helps to retain color of meat
A combination of horticultural crops, field crops and tree species is called:
When is the first harvest of geranium typically done after planting?
The major component of honey is-
NABL stands for
Relevant for Exams:
