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SOVA2 [1]
3 years ago
9

One number is 4 more than another, and their sum is 60. What is the smaller number?

Mathematics
1 answer:
ivanzaharov [21]3 years ago
5 0
According to your question, there are 2 unknown numbers mentioned. Let the 2 unknown numbers be represented by the variables x & y, then x is considered to be one of the numbers being more than y by the addition of 4, .ie. x = 4 + y --- (1) The sum of the 2 numbers is 60, i.e. x + y = 60 --- (2) To find the smaller number, we solve eqn (1) & (2) using the concept of substitution, i.e. substitute 4 + y for x in eqn (2), i.e. 4 + y + y = 60 4 + 2y = 60 2y = 60 - 4 2y = 56 y = 28 ...Ans. Recall that x is more than y by 4, then 28 is the smaller number.
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Use the formula to evaluate the series 1+2+4+8+...a10
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The sum of the given series is 1023

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Sum of the geometric series is given by:

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Given the series: 1+2+4+8+.................+a_{10}

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We have to find the sum of the series for 10th term.

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