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Let, distance be ‘d’ km So, d/(s – 10) – d/s = 2 Or, 10d = 2s(s – 10) Or, d = 2 × s(s – 10)/10 -----(i) And, d/(s – 20) – d/s = 5 Or, 20d = 5 × s(s – 20) Or, d = 5 × s(s – 20)/20 --------(ii) From (i) and (ii), Let S1 = 10 km/h S2 = 20 km/h T1 = 2 hours T2 = 5 hours Let original speed be S km/h [(S – 10) × 2]/10 = [(S – 20) × 5]/20 4(S – 10) = 5(S – 20) 4S – 40 = 5S – 100 S = 60 km/h Required distance = 60 × (60 – 10)/10 × 2 = 60 × 5 × 2 = 600 km
A. The officers are looking to reunite the dog with his owner.
B. Eventually, the police caught the Chihuahua.
C. A police officer on a mo...
A. axe at his feet, spat angrily, and,
B. the woman flung down an
C. her lips, began to scold him
D. it with his axe cautiously
Given below are five sentences, each of which has been jumbled up in an order which makes the text incoherent. Mark the option which gives the meaningf...
Given below are four jumbled sentences. Pick the option that gives their correct order.
A: One day when the quarreling had been much more viol...
in Hindi, each card features a common Indian bird species (A)/ about its behaviour and range on the other (B)/with photographs on one side and informati...
1. There was a poor fisherman, who had a wife and three children.
P. One day, like always, he threw his net in the seawater.
Q. After some...
Area under cotton cultivation in Tamil Nadu(P) as farmers harvesting cotton now (Q) is likely to fall next sowing season(R)...
A. I caught a snake once.
B. That well is full of snakes.
C. I caught it by its tail and dropped it in the old well.
D. Whenever ...
Given below are four jumbled sentences. Out of the given options pick the one that gives their correct order.
A. Eventually, she overcame adversi...
Below are given a few sentences with their parts jumbled in a random order. Below the sentences are given possible rearrangements of the parts. You ne...
