I heard that you are good at math, so I want to ask you a question. Dad said, "this year, the age ratio of grandfather and Xiao Ming is 7:1, and grandfather is 60 years older than Xiao Ming, How old is grandfather this year? "

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• 1. This year, Xiaoming's father's age is four times that of Xiaoming, and the sum of Xiaoming's age and his father's age is just the age of his grandfather, who is 63 years old How old is Xiao Ming this year?
• 2. Xiao Ming's grandfather is 60 years old. His father's age is 7 / 12 of his grandfather's. Xiao Ming's age this year is 2 / 7 of his father's. how old is Xiao Ming this year? Determinant
• 3. My grandfather said to Xiao Ming, "I'm seven times your age now, six times your age in a few years, five times, four times, three times and two times your age in a few years."______ Xiao Ming is now______ ．
• 4. My grandfather said to Xiao Ming, "I'm seven times your age now, six times your age in a few years, five times, four times, three times and two times your age in a few years."______ Xiao Ming is now______ ．
• 5. 8. My grandfather said to Xiao Ming, "I am seven times as old as you are now. In a few years, I will be six times as old as you. In a few years, I will be five times, four times, three times and two times as old as you respectively." do you know the age of my grandfather and Xiao Ming now?
• 6. My grandfather said to Xiao Ming, "I'm seven times as old as you now, and six times as old as you in a few years My grandfather said to Xiaoming, "I am seven times as old as you are now. In a few years, I will be six times as old as you are. In a few years, I will be five, four, three and two times as old as you are." do you know the age of my grandfather and Xiaoming now
• 7. Ye said to Xiao Ming, "I am seven times as old as you. In a few years, I will be six times as old as you. In a few years, I will be five times, four times, three times and two times as old as you respectively." do you know the age of my grandfather and Xiao Ming?
• 8. My grandfather said to Xiaoming, "I'm seven times your age now, six times your age in a few years, five times, four times, three times and two times your age in a few years." do you know my grandfather's and Xiaoming's age now? Pay attention to the specific methods! Thank you, please help me! I will increase the reward score ~ \ (≥ ▽≤) /! What I want is a concrete process, not an answer
• 9. Xiao Ming asked his grandfather how old he is this year, and he replied, "I am seven times your age this year, six times yours in a few years, and I will become yours in a few years."
• 10. Xiao Ming, a primary school student, asked his grandfather how old he was this year. He replied, "I am more than seven times your age this year. In a few years, I will become six times your age. In a few years, I will become five times your age. In a few years, I will become four times your age." you said that Xiao Ming's grandfather is () years old A. 60B. 69C. 70D. 72
• 11. Dad said, "the age ratio of grandfather and Xiao Ming is 7:1. Grandfather is 60 years older than Xiao Ming. How old is grandfather this year?" please help Xiao Ming figure out how old is grandfather this year
• 12. My father said, "this year, the age ratio between my grandfather and Xiao Ming is 7:1. My grandfather is 60 years older than Xiao Ming. How old is my grandfather this year“
• 13. This year, my grandfather's age is six times that of Xiao Ming. In a few years, my grandfather's age will be five times that of Xiao Ming. In a few years, my grandfather's age will be four times that of Xiao Ming
• 14. Xiao Ming is 6 years old and his grandfather is 62 years old. A few years later, Xiao Ming's age is 13 times his grandfather's?
• 15. What's the meaning of SGN
• 16. The relationship between evaporation rate of water and temperature? Such as the title Eliminate air flow
• 17. On monotone boundedness of sequence function Let f (x) be monotonically bounded in (- ∞, + ∞) and {xn} be a sequence. The following proposition is correct () If a {xn} converges, then {f (xn)} converges B if {xn} is monotone, then {f (xn)} converges How to judge these two options?
• 18. Find a few English words to describe the character Hand it in tomorrow
• 19. Total differential z = (x ^ 2 + y ^ 2) / (x ^ 2-y ^ 2)
• 20. Let X and y be real numbers, and x1 − I + Y1 − 2I = 51 − 3I, then x + y=______ ．