math

posted by .

john had 15 dollars more than half of what jack had. john had 86 dollars. how much did jack have?

• math -

john = 15 + jack/2
john = 86

so,

86 = 15 + jack/2
71 = jack/2

jack = 142

Similar Questions

1. math !!!! :O

The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards …
2. math

The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards …
3. Pre-Algreba

The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards …
4. math

The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards …
5. math

The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards …
6. maths

Amy had 20% more money than John. After she spent 50% of her money, she had \$72 less than John. How much money had she left?
7. Maths

Amy had 20% more money than John. After she spent 50% of her money, she had \$72 less than John. How much money had she left?
8. algebra

john had 35 Dollars before spending N dollars on clothes how much money remains
9. english

(1) Jack had been without a car since Monday. (2) The car needed a new battery, and Jack was broke. (3) Although he was embarrassed, Jack called his mother. (4) He felt he had no choice. (5) Fortunately, his mom was happy to help out. …
10. english

(1) Jack had been without a car since Monday. (2) The car needed a new battery, and Jack was broke. (3) Although he was embarrassed, Jack called his mother. (4) He felt he had no choice. (5) Fortunately, his mom was happy to help out. …

More Similar Questions