On sunday, jan. 7, 2007, rob has $\$5$ he saved from his birthday, and he receives his first allowance payment of $\$35$. he will continue to receive a $\$35$ allowance payment every sunday. however, starting jan. 7, 2007, rob is also responsible for paying for his five lunches each week at $\$3$ per lunch and his weekly saturday movie that costs $\$9.50$. if rob always adds the remainder of his allowances each week to his current savings, after how many total allowance payments will he have enough money to pay for the $\$50$ cd player he wants and still be able to cover his expenses for the rest of that week?

5 allowance payments

Step-by-step explanation:

It started on Sunday, Jan. 7, 2007

On this date, he was having $5 for his birthday and he received his allowance of $35. Therefore

Total amount is 35 + 5 = $40

His expenses are

For lunch, 3×5 lunches = $15 weekly

For Saturday movies, $9.50 weekly

Total expenses for the first week = 15+9.5 = 24.5

Balance at the end of week 1

= 40-24.5 = $15.5

He continues to receive $35 weekly

Amount in his account in week 2 is

35 + 15.5 = $50.5

Expenses for week 2 = 24.5

Balance at the end of week 2

=50.5 -24.5 = $26

Amount in his account in week 3 is

35 + 26 = $61

Expenses for week 3 = 24.5

Balance at the end of week 3

=61 - 24.5 = $36.5

Amount in his account in week 4 is

35 + 36.5 = $71.5

Expenses for week 4 = 24.5

Balance at the end of week 4

=71.5 - 24.5 = $47

Amount in his account in week 5 is

35 + 47 = $82

Expenses for week 5 = 24.5

Balance at the end of week 5

=82 - 24.5 = $57.5

He wants to to pay for the $50 CD player. He has $57.5

So he would be able to buy it and still cater for other expenses 5 allowance payments

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.