Start learning 50% faster. Sign in now
Let John’s current age be 5x years and Mary’s current age be 3x years. According to the problem, five years ago: John's age = 5x - 5 Mary's age = 3x - 5 The sum of their ages five years ago was 38 years: (5x - 5) + (3x - 5) = 38 Simplifying the equation: 5x - 5 + 3x - 5 = 38 8x - 10 = 38 8x = 48 x = 6 Now, substituting x back to find their ages: John's age = 5x = 5(6) = 30 years Mary's age = 3x = 3(6) = 18 years
1 5 13 25 41 ...
55 46 60 41 65 36 ?
9 15 90 95 475 479
6 a b c d e
Find the value of c.
...47 82 117 152 187 ?
Look at the below pattern and complete the series: 11, 15, 22, 26, 33, 37, 44, ?
2 5 16 65 326 ?
24 12 18 ? 157.5 708.75 3,898.125
1.2 4.2 ? 18.2 33.2 56.2
...104 106 110 113 ? 126
14 15 32 99 400 ?
...