An old man said that if you add 17 to my age and multiply it by 1 / 4, then subtract 15 and divide it by 1 / 10, you will be 100 years old

83 years old

RELATED INFORMATIONS

1. Add and subtract symbols before 2,3,4,5,6,7,8,9 to make the result zero
2. The difference between AB is 737, a divided by B, the quotient is 16, the remainder is 17, a = (), B = ()
3. What's five out of nine minus five out of nine times three out of five?
4. The difference between 3 times of a number and 2 is 36 divided by the quotient of 0.9, which is 111. Find the number? List the equation and find the solution of the equation
5. How to move a match so that 52 minus 9 equals 46 Ask God for help
6. 1）.3/1+（—6/5） 2).27-18+(-7)-32 3).0.5+(-4/1）-（-2.75）+2/1 4）.33.1-（22..9）+（-10.5） 5）.（-8）-（-15）+（-9）-（-120） 6）.-3/2+（-6/1）-（-4/1）-2/1 7）.5/3-2/3+（—4/11）+4/13
7. How to add 8 numbers to 1000?
8. (2 / 7 + 13 / 9 + 5 / 7) divided by 26 / 3 How much is it
9. Simplification ratio: 5 / 24 to 1 / 6, 5.6 to 0.7, 1 / 2 to 2 / 3 to 5 / 6
10. How to change the equation: 0.7-x divided by 2 = x-0.25-x divided by 3
11. What is the quotient of the product of 14 and 17 divided by the difference between 1 and 14?
12. 3 friends 1 / 8 times 7.4 -- 3 and 1 / 8 + 3.6 times 3.125
13. 16+16x=58
14. 7.2 times what product divided by 0.8 times what product equals 9
15. How much is one third equal to fifteen?
16. 0.9+0.99+0.999+… +0. (100 9)
17. 6-32-76-1312-2120-3130= ___ ．
18. Reduce 8 / 36, 27 / 6, 30 / 57 / 63 to the simplest score
19. 0.15 equals (): () equals 30 divided by () equals 15%
20. How to calculate 58.36 × 0.5 18.2