John took all his money from his savings account. He spent 198 on a radio and 4/11 of what was left on presents for his friends. Of the money remaining, John put 2/9 into a checking account and the last remaining 980 was left to charity. How much money did John originally have in his savings account

x ≈ $1139

Step-by-step explanation:

Let the initial amount he had in his savings account be x.

He spent 198 on a radio.

Amount left = x - 198

He spent 4/11 of this remaining amount on presents for his friends.

Amount left = (7/11)(x - 198)

Now, he put 2/9 of remaining money into a checking account and 980 which is left to charity.

Thus total is;

(2/9)[(7/11)(x - 198)] + 980

This should equal the amount he had initially in the account which we said is x.

Thus;

x = (2/9)[(7/11)(x - 198)] + 980

x = (14/99)(x - 198) + 980

Multiply through by 99 to get;

99x = 14x - 198 + (980 × 99)

99x - 14x = 97020 - 198

85x = 96822

x = 96822/85

x ≈ $1139

1/4 because there is 4 grades.

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.