Lvdnerluvviz
Answered

the simple interest (i) for a certain savings account varies jointly as the time (t) and the principal (p). after 4 years, a principal of 10,000 earns an interest of 1000. after how many years will 15,000 earn an interest of 5000?​

Sagot :

MrLitwakviz

Answer:

t = 13.33

Step-by-step explanation:

[tex]i \: = ktp \\ 1000 = k(4)(10000) \\ k = 0.025 \\ \\ 5000 = (0.025)(15000)t \\ t = \frac{5000}{(0.025)(15000)} \\ t = 13.33 \: years[/tex]