I'll give brainliest!! Show why this statement is true. Random answers will be reported!
2 answers:
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Answer:
Ernest gets 194 monthly allowance
Step-by-step explanation:
* Lets revise the rule of the average
- Average = The sum ÷ the total number
- Assume that the allowances money of Ernest, Jack, David and Mike
are E, J, D, M respectively
∵ The average allowance money of Ernest jack David and mike is
123 per month per person
∴ 123 = (E + J + D + M) ÷ 4
- Multiply both sides by 4
∴ E + J + D + M = 492 ⇒ (1)
∵ The average allowance of Ernest jack and David is 159 per month
per person
∴ 159 = (E + J + D) ÷ 3
- Multiply both sides by 3
∴ E + J + D = 477 ⇒ (2)
- Subtract equation(2) from equation (1) to find M
∴ M = 15
* <em>Mike's monthly allowance is 15</em>
∵ David's monthly allowance is 2 less than mikes
∴ D = M - 2
∵ M = 15
∴ D = 15 - 2 = 13
∴ <em>David's monthly allowance is 13</em>
∵ Mikes monthly allowance is 1/18 of jacks
∴ M = × J
∴ 15 = × J
- Multiply both sides by 18
∴ J = 270
* <em>Jack's monthly allowance is 270</em>
- Substitute the values of D , J in equation (2) to find E
∵ D = 13 and J = 270
∵ E + J + D = 477
∴ E + 270 + 13 = 477
∴ E + 283 = 477
- Subtract 283 from both sides
∴ E = 194
* <em>Ernest's monthly allowance is 194</em>
*<em> Ernest gets 194 monthly allowance</em>
Answer:
1,020 seconds
Step-by-step explanation:
we know that
To find out how many seconds after Kristen gets home is her dinner ready, subtract the time Kristen gets home from the time Kristen's dinner is ready
so
Remember that
Convert minutes to seconds