Question
12 years ago, the ratio of the ages of Ivan and Jenny
was 2:1. The present age of Carl is 18 years more than one-sixth of Jenny’s present age. Find the ratio of the present age of Carl and Ivan if Ivan’s age in 6 years will be 42 years.Solution
Ivan and Jenny's ages 12 years ago = 2x and x Present ages = 2x + 12, x + 12 Ivan's present age = 42 - 6 = 36 years → 2x = 36 - 12 = 24 → x = 12 Jenny's present age = 12 + 12 = 24 Carl's present age = (1/6) * 24 + 18 = 22 years Required ratio = 22:36 = 11:18
A number is first increased by 35% and then decreased by 35%. If the net change in the number is 302.5, then find the original number.
Solve the following expression and calculate the approximate value.
802 of
74.856% of 639.98 - 15.098 of √145 = ? of 14.972
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
(1782 ÷ 11.98) ÷ 2.92 × 35.89 + 25% of 541 – 67% of 1299 = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
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