Question
Two years ago, the sum of the ages of 'Sonia' and
'Ayesha' was 50 years. If the ratio of their present ages is 9:16, respectively, then find the age of 'Ayesha' three years from now.Solution
ATQ,
Sum of present ages of 'Sonia' and 'Ayesha' = 50 + 2 + 2 = 54 years
Present age of 'Ayesha' = (16/25) × 54 = 34.56 ≈ 35 years (rounded)
Therefore, the age of 'Ayesha' three years from now = 35 + 3 = 38 years
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25 A 5 B 8 D 6 C 4...
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Select the correct combination of mathematical signs that can sequentially replace ‘*’ sign and balance the equation given below.
54 * 2 * 4 ...
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54 D...
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75 + 42 – 6 × 56 ÷ 7 + 6 × 3 – 2
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Expression: 84 ÷ 11 - 15 X 14 + 75
Interchanges: Sign: '...
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...Which two signs need to be interchanged to make the following equation correct?
62 – 14 × 75 ÷ 15 + 50 = 82
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