2017-02-16 18:03:14kfsdgte
Maths!!
標題:
Maths!!
1) Express 50g as percentage of 1kg.2) A deposit of $5000 gives a simple interest of $1500 at 5% p.a. Find the period of deposit.3) John borrow $3000 at 5% p.a. compounded yearly. Find the total compound interest he will pay in 2 years.4) Car A travels at 54km/h and car B travel at 24 m/s . Find the... 顯示更多 1) Express 50g as percentage of 1kg. 2) A deposit of $5000 gives a simple interest of $1500 at 5% p.a. Find the period of deposit. 3) John borrow $3000 at 5% p.a. compounded yearly. Find the total compound interest he will pay in 2 years. 4) Car A travels at 54km/h and car B travel at 24 m/s . Find the ratio of the speed of car A to that of car B.
最佳解答:
1) The percentage of 50 g in 1 kg (1000 g) = (50/1000) x 100% The percentage of 50 g in 1 kg (1000 g) = 5% ===== 2) Interest = Principal x Rate x (No. of Periods) I = P x R x n 1500 = 5000 x 5% x n n = 1500 / (5000 x 5%) years n = 6 years Ans: The period of deposit = 6 years ===== 3) I = P(1+R)n - P I = $3000x(1+5%)2 - $3000 I = $3307.5 - $3000 I = $307.5 Ans: The total compound interest in 2 years is $307.5 ===== 4) Speed of car A = 54 km/h Speed of car A = 54 x (1 km/1 h) Speed of car A = 54 x (1000 m/3600 s) Speed of car A = 15 m/s Speed of car A : Speed of carbon B = 15 m/s : 24 m/s Speed of car A : Speed of carbon B = 15 : 24 Speed of car A : Speed of carbon B = 3x5: 3x8 Speed of car A : Speed of carbon B = 5 : 8 =
其他解答:E2A5F59BAA12C031
Maths!!
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發問:1) Express 50g as percentage of 1kg.2) A deposit of $5000 gives a simple interest of $1500 at 5% p.a. Find the period of deposit.3) John borrow $3000 at 5% p.a. compounded yearly. Find the total compound interest he will pay in 2 years.4) Car A travels at 54km/h and car B travel at 24 m/s . Find the... 顯示更多 1) Express 50g as percentage of 1kg. 2) A deposit of $5000 gives a simple interest of $1500 at 5% p.a. Find the period of deposit. 3) John borrow $3000 at 5% p.a. compounded yearly. Find the total compound interest he will pay in 2 years. 4) Car A travels at 54km/h and car B travel at 24 m/s . Find the ratio of the speed of car A to that of car B.
最佳解答:
1) The percentage of 50 g in 1 kg (1000 g) = (50/1000) x 100% The percentage of 50 g in 1 kg (1000 g) = 5% ===== 2) Interest = Principal x Rate x (No. of Periods) I = P x R x n 1500 = 5000 x 5% x n n = 1500 / (5000 x 5%) years n = 6 years Ans: The period of deposit = 6 years ===== 3) I = P(1+R)n - P I = $3000x(1+5%)2 - $3000 I = $3307.5 - $3000 I = $307.5 Ans: The total compound interest in 2 years is $307.5 ===== 4) Speed of car A = 54 km/h Speed of car A = 54 x (1 km/1 h) Speed of car A = 54 x (1000 m/3600 s) Speed of car A = 15 m/s Speed of car A : Speed of carbon B = 15 m/s : 24 m/s Speed of car A : Speed of carbon B = 15 : 24 Speed of car A : Speed of carbon B = 3x5: 3x8 Speed of car A : Speed of carbon B = 5 : 8 =
其他解答:E2A5F59BAA12C031