ahmad, rani, dan isna menabung di bank. jumlah uang tabungan ahmad dua kali uang tabungan rani, 100.000 lebih sedikit dari tabungan isna. selisih uang tabungan rani dan ahmad adalah 50.000. jumlah uang tabungan mereka bertiga 1.500.000. uang tabungan isna adalah

Can someone me and do the problem plz so i can understand it more better

4+(2+x) can you me solve this problem

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?