Question 11
Read carefully: dividing two positive whole numbers by their GCD (HCF) leaves two co-prime numbers. For example, 50 and 70 have GCD 10; their underlying co-primes are 5 and 7, obtained by dividing both numbers by 10.
Now use this idea. Two numbers add to 1085 and have GCD 35. What is the average of their underlying co-prime numbers, rounded to the nearest whole number?
Use ordinary rounding: a fractional part of exactly 0.5 rounds up. Enter one whole number.
Now use this idea. Two numbers add to 1085 and have GCD 35. What is the average of their underlying co-prime numbers, rounded to the nearest whole number?
Use ordinary rounding: a fractional part of exactly 0.5 rounds up. Enter one whole number.