question 1 :
(17 x 33) / 100 = 5.61
5.61 x 7 +17 = 56.27
After 7 weeks there are nearly 56 worms.
Question 2 :
999 = 5.61x+ 17
999 – 17 = 5.61x
x = 982 / 5.61
x = 175.04
There will be 999 worms after 175 weeks.
Question 3 :
9 x 6 x 6 = 324
After 1 day, birds eat 324 worms.
3 x 324 = 972
If they begin eating at sunday, wednesday they should have eaten 972 worms.
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