Tony’s deposit earns SAR 45.80 in simple interest over 3 years in an account with an interest rate of 1.72%. How much did Tony deposit?

The answer is 500

Step-by-step explanation:

STEP 1: Convert interest rate of 2% per 6 months into rate per year.

                             rate per year = rate per 6 months x 2 = 2% x 2 = 4%

STEP 2: Convert 9 months into years.

                             9 months = 9/12 years = 0.75 years

STEP 3: Find principal by using the formula I = P x i x t, where I is interest, P is total principal, i is rate of interest per year, and t is total time in years.

In this example I = $15, i = 4% and t = 0.75 years, so

                                                                   I = P x i x t

                                                                   P = I/i x t

                                                                   P = 15/0.04 x 0.75

                                                                   P = 500

answer: 370

step-by-step explanation:

remember use pemdas! there are no parentheses or exponents so lets move onto the first part of the equation: multiplication and division. first, lets break the first part of the equation up into something easier using the distributive property. 28 * 12= (20 *12) + (8*12) you know that 20*12 is 240 and 8*12 is 96. add them and you get 336. then, lets solve the last part of the equation (the last part of pemdas is addition and subtraction). 336 plus 34 is 370. hope this !