The sum of number a and number B is 63. If the decimal point of number a moves one place to the right, it is equal to half of number B. number a is 63______ ．

The sum of number a and number B is 63. If the decimal point of number a moves one place to the right, it is equal to half of number B. number a is 63______ ．

Let a number be x, then B number be 20x, & nbsp; X + 20x = 63, & nbsp; & nbsp; & nbsp; 21x = 63, 21x △ 21 = 63 △ 21, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X = 3; so the answer is: 3

The sum of a and B is 343.4. If the decimal point of a moves two places to the left, it is equal to B number

If the decimal point of number a is moved to the left by two digits, it is equal to number B, which means that number a is 100 times of number B,
Take B as one, a is 100, the sum of a and B is 343.4, 100 + 1 = 101
The second number is 343.4 (1 + 100) = 3.4
4 × 100 = 340

Number a is 29.7 more than number B. the decimal point of number B is exactly equal to number a after moving two digits to the right. What is the sum of number a and number B?

Number B: 29.7 △ 100-1 = 29.7 △ 99 = 0.3 number A: 0.3 × 100 = 30 and: 30 + 0.3 = 30.3 answer: the sum of number a and number B is 30.3