On the day of the canteen, 800 coupons were sold, the price of each coupon was RM 30 and RM 50 respectively. The amount of money earned from the sale of coupons was RM30000. How many copies of RM30 and RM50 coupons were sold?

Let:

RM 30 = x

RM 50 = y

x + y = 800 - - - (1)

30x + 50y = 30000 - - - (2)

From (1)

x = 800 - y

Put x = 800 - y in (2)

30(800 - y) + 50y = 30000

24000 - 30y + 50y = 30000

24000 + 20y = 30000

20y = 30000 - 24000

20y = 6000

y =

4 0

3 years ago

WILL MARK BRAINLIEST!!! HELP!

Virty [35]

Answer:

d) x=4

Step-by-step explanation:

$\sqrt{x} +5 = \sqrt{x + 45}$

$(\sqrt{x} +5)^{2} = (\sqrt{x + 45})^{2}$

$x + 10\sqrt{x} +25 = x + 45$

$10\sqrt{x} = 20$

divide 10 in both sides

$(\sqrt{x}){2} = (2){2}$

x=4

8 0

3 years ago

The maximum load that a crane can lift is about 39,700 pounds. What is another way to write 39,700?

Ber [7]

Answer:

number 3

Step-by-step explanation:

(3,000+900+70) = 3,970

3,970*10 = 39,700

6 0

3 years ago

Help please! worth a lot of points! Screenshot included

vlada-n [284]

Answer:

x=44444444444444444444444444444444

Step-by-step explanation:

8 0

3 years ago

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