Question

Trei elevi au cules 9940 alune. Cate alune a cules fiecare,daca primul si al doilea au cules 5575 alune,iar al doilea si al treilea 6647 alune? va rog intrebarile

Answer 1

rezolvare
1. cate alune a cules al treilea elev?
9940-5575=4365
2.cate alune a cules primul elev?
9940-6647=3293
3.cate alune au cules primul si al treilea elev?
4365+3293= 7658
4.cate alune a cules al doilea elev?
9940-7658=2282

Answer 2

a+b+c=9940. a+b=5575. b+c=6647. a+6647=9940=>a=9940-6647. =>a=3293. 5575+c=9940=>c=9940-5575=>c=4365. 3293+b+4365=9940=>b=9940-(3293+4365)=9940-7658=>b=2282