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Total weight of x persons = 50 × x = 50x kg Total weight of (x – 15) women = 40 × (x – 15) = 40x – 600 kg According to the question, 50x = 40x – 600 + 35x – 600 + 50x – 1200 50x = 125x – 2400 125x – 50x = 2400 75x = 2400 x = 32
What is the sum of ages of persons whose ages are multiple of 5?
How many such pairs of letter are there in the word LEVERAGE, each of which has as many letters between them in the word as in the English alphabet?