Question

Manish is saving money to buy a video game that costs Rs 5,000. He saves Rs 200 per week. So far he saves Rs 400. How many more weeks will it be before he has enough money to buy the video game?​

Answer 1

Answer:

21 months

Step-by-step explanation:

Saving for first 3 months = 3×200 = 600

Let the time taken to save Rs. 11040 be n+3 months.

Here d = 40, a = 240

In n+3 months,

600+(n/2)(2×240 +(n-1)40) = 11040

(n/2)(480+40n-40) = 10440

(440+40n)n = 20880

n2+11n-522 = 0

(n-18)(n+29) = 0

n = 18 or -29

n cannot be negative.

So n + 3 = 18+3 = 21

Hence 21 months

91.25 weeks

Answer 2

Answer:

23 weeks because 23 multiply by 200 is equal to 4600 and he he has 400 so 4600 plus 400 is equal to 5000

thus the answer is 23 weeks .