exam Maths Puzzle Numerical Ability

Mrs. Shieh was 24 years old when Ingred was born. In three years the sum of their ages will be 68 years. How old is each now?

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exam Other Question

If the sum of the consecutive integers from -22 to x, inclusive, is 72, what is the value of x? y=0.2x-5.6

Need to find the y intercept for the above equation in statistical analysis class.