zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的 Word Problems >

at what rate percent per annum will a some of R640 amount to R774.40 in 2 years,compounded annually

解答

a t w ha t r a t e p erce n t p er ann u m w i ll a so m e o f R 640 am o u n t t o R 774.40 in 2 ye a rs, co m p o u n d e d ann u a ll y

解答

Rate : 10%

求解步骤

Translate the problem into an equation:

774.4 = 640 (1 + \frac{r}{1})^{1 \cdot 2}

求解

r, 774.4 = 640 (1 + \frac{r}{1})^{1 \cdot 2} : r = 10%

Rate : 10%

流行的例子

Suppose that 7000 is placed in an account that pays 3% interest compounded each year.Assume that no withdrawals are made from the account. Do not do any rounding. Find the amount in the account at the end of 1 year.What is the 面积 of a triangle with a height of 11 cm and a base of 2 cm?the sum of 6 times a number and 9 is equal to2 circle has area 40 square feet. Find the 半径. Round your answer to one decimal place, if necessary. The 半径 of the circle is feet.Naomi puts 2,000.00 into an account to use for school expenses. The account earns 5% interest, compounded annually. How much will be in the account after 7 years?