Answer:
1) C. $13.90 per pound
2) B. 93.75
3) B. 399.42
4) B. 87
Step-by-step explanation:
Question 1
Given:
- Cost of 4 lb of cat food = $65.60.
Therefore, one pound of cat food costs:
[tex]\sf \implies \dfrac{\$65.60}{4}=\$16.40[/tex]
If the customer applied a coupon for $2.50 off per pound, then the new price per pound of the cat food is:
⇒ Price after discount = $16.40 - $2.50 = $13.90 per pound
Question 2
To calculate 37.5 divided by 0.4, multiply both numbers by 10.
Therefore, divide 375 by 4:
[tex]\large \begin{array}{ccclcc}&0&9&3.&7&5\\\cline{2-6}4 & \!\!\!\big) 3&7&5&&\\&0& \downarrow\\\cline{2-6} &3&7\\ -& 3 & 6 & \downarrow \\ \cline{2-6} & 0 & 1 & 5\\-&&1&2\\ \cline{2-6} & & 0 & 3.&0 \\ - &&&2. & 8\\ \cline{2-6} &&&&2&0\\ - &&&&2 & 0\end{array}[/tex]
Therefore:
⇒ 37.5 ÷ 0.4 = 93.75
Question 3
The product of two numbers means to multiply them.
When multiplying decimals, remove the decimal points and multiply the numbers as if there were no decimals:
[tex]\begin{array}{ccccccc} && &4 & 7 & 5 & 5 \\ \times &&& &&8 & 4\\ \cline{2-7} &&1 & 9 & 0 & 2 & 0\\ &3 & 8 & 0 & 4 & 0 & 0\\ \cline{2-7} & 3 & 9 & 9 & 4 & 2 & 0\\ \cline{2-7}\end{array}[/tex]
Finally, put the decimal point back in the answer - it will have as many decimal places as the decimal places of the two original numbers combined.
Therefore, 47.55 × 8.4 = 399.420 = 399.42
Question 4
To calculate 17.4 divided by 0.2, multiply both numbers by 10.
Therefore, divide 174 by 2:
[tex]\large \begin{array}{cccl}&0&8&7\phantom{)}\\\cline{2-4}2 & \!\!\!\big) 1&7&4\phantom{)}\\&0& \downarrow\\\cline{2-4} &1&7\\ -& 1 & 6 & \downarrow \phantom{)}\\ \cline{2-4} & 0 & 1 & 4\phantom{)}\\-&&1&4\\ \cline{2-4} & & & 0 \end{array}[/tex]
Therefore:
⇒ 17.4 ÷ 0.2 = 87
