![kennedy3076](/avatars/19930.jpg)
kennedy3076
31.08.2019 •
Mathematics
Amother wants to invest $12,000 for her son education. she invests a portion in a bank called a cd account which earns 4% and the remainder in a savings bond that earns 7%. if the total interest earned after one year is $720.00, how much was invested in the cd account
Solved
Show answers
More tips
- A Animals and plants What Do Terriers Eat?...
- F Food and Cooking Discover the Benefits and Properties of Dates...
- C Computers and Internet Dynamically Assigned IP Address: What Is It and How Does It Work?...
- S Style and Beauty How to Get Rid of Acne: Scientifically Proven Methods...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
Answers on questions: Mathematics
- M Mathematics Find volume of a flat trianlge divided into cubes...
- M Mathematics K What is the length of line segment KJ? 6 2 V3 units 32 units M 3 BV3 units D3V5 units hbu...
- E English Sister and Brother She sees Her brother in big trouble this time, Trouble too big for her. Will sister run? Or stay? She feels The frantic knot in her stomach, Worry seems hard...
- S Social Studies Which one of the following sentences best describes the character of Jamie Sabin? a. He’s young and eager to get home. b. He’s a dreamer looking forward to a great new life....
Ответ:
now, she had 12,000, so we know whatever "a" and "b" are, they
a + b = 12000
now... what's 4% of a? well, (4/100) * a, or 0.04a
what's 7% of b? well (7/100) * b or 0.07b
we know the total interest, that 4% and 7% amounts, add up to 720, thus
0.04a + 0.07b = 720
thus
solve for "a", to see how much was invested in CD
what about "b"? well b = 12000 - a
Ответ:
0.75 FRIST PART SECOND PART 5.75
Step-by-step explanation:
THANKS ME LATER