Question
A’s age is 140% of what he was 2 years ago, But 70% of
what it will be after 2 years. What is his present age?Solution
Let present age of A be x years. => 140% of (x - 2) = 70% of (x + 2) => 2(x - 2) = (x + 2) => 2x – 4 = x + 2 => x = 6 years
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In animals like Annelids and Molluscs, organs are associated to form functional systems, each concerned with a specific physiological function. This pat...
Given below is the DNA coding sequence. Its complementary strand would readas :
5' – GTATTACG – 3'
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