Question

directions: read and solve.

1. greg puts money in his daughters piggy bank.

every day, he puts in $0.75, but on sundays, he
puts in $5.75. if he continues this for a year, how
much will his daughter have in her piggy bank?
assume there are 52 weeks in a year.
he puts $0.75 each non-
sunday day (6) 6×0.75 = 4.5
ollors 4.5 + 5.75 = 10.25 dollors
there are 52 weeks in a
year total money 10.25×52=
(10 + 0.25)×52 = 10×52 + 0.25×52
= 520 + 13
= 533

1. bernard works 40 hours a week. because of

technology, his boss shortened his work week by
3.75 hours every week. if bernard gets paid $25
a hour, how much money does he now make a
week? how much did he lose due to technology
shortening his work hours?
40 - 3.75 = 36.25 hours
25×36.25 = 906.25 dollors
25×3.75 = 93.75 dollors
he now makes $906.25 a
week and lost.

1. every day, cedric buys a candy bar. it costs

$1.08, but part of it is tax. the cost of just the
candy bar is $0.99. if cedric buys a candy bar
every day for a year (365 days), how much
money does he pay in taxes?
so the daily tax is 1.08 -
0.99 = 0.09 0.09×365
9×365 = (10 - 1)×365 = 3650 - 365
= 3285 0.09×365=
×365 = 3285/100 = 32.85
32.85 dollors

1. kevin makes rice with every meal. for

breakfast, he makes 3 1/2 cups of rice, for lunch he
only makes 2 1/8 cups, and for dinner he makes
5 1/4 cups. assuming he makes the same amount
every day, how much rice does kevin use a
week?
i dont
really know
explain the steps you used to solve problem number______.

copyright © swun math

grade 7 unit 2 lesson 7 p hw

Explanation:

Step1: Calculate the daily rice consumption

First, convert the mixed - numbers to improper fractions.
\(3\frac{1}{2}=\frac{3\times2 + 1}{2}=\frac{7}{2}\), \(2\frac{1}{8}=\frac{2\times8+1}{8}=\frac{17}{8}\), \(5\frac{1}{4}=\frac{5\times4 + 1}{4}=\frac{21}{4}\)
Then find the sum of the rice for one day: \(\frac{7}{2}+\frac{17}{8}+\frac{21}{4}\)
Find a common denominator, which is \(8\).
\(\frac{7\times4}{2\times4}+\frac{17}{8}+\frac{21\times2}{4\times2}=\frac{28}{8}+\frac{17}{8}+\frac{42}{8}=\frac{28 + 17+42}{8}=\frac{87}{8}\) cups per day.

Step2: Calculate the weekly rice consumption

Since there are \(7\) days in a week, multiply the daily consumption by \(7\).
\(\frac{87}{8}\times7=\frac{609}{8}=76\frac{1}{8}\) cups.

Answer:

Kevin uses \(76\frac{1}{8}\) cups of rice a week.