Question

Last week, a customer paid $65.60 for 4 pounds of cat food. This week, she has a coupon for $2.50 off per pound. What is the new price Last week, a customer paid $65.60 for 4 pounds of cat food. This week, she has a coupon for $2.50 off per pound. What is the new price per pound of cat food?

A. $10.00
B. $12.60
C. $13.90
D. $15.76

Last week, a customer paid $65.60 for 4 pounds of cat food. This week, she has a coupon for $2.50 off per pound. What is the new price per pound of cat food?

A. $10.00
B. $12.60
C. $13.90
D. $15.76

What is 37.5 divided by 0.4?

A. 9.4
B. 93.75
C. 93.85
D. 937.5

What is the product of 47.55(8.4)?

A.39.942
B. 399.42
C. 566.20
D. 570.60

What is the quotient of 17.4 ÷ 0.2?

A. 8.7
B. 87
C. 870
D. 8,700

Answer 1

1) C. $13.90 per pound

2) B. 93.75

3) B. 399.42

4) B. 87

Explanation:

Question 1

Given:

• Cost of 4 lb of cat food = $65.60.

Therefore, one pound of cat food costs:

`\sf \implies (\$65.60)/(4)=\$16.40`

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:

`\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}`

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:

`\begin{array}{ccccccc} && &4 & 7 & 5 & 5 \\ * &&& &&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}`

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:

`\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}`

Therefore:

⇒ 17.4 ÷ 0.2 = 87