Plan Comparison Analysis

Crunching the numbers

I'm looking into the annual cost of two internet data plans. Plan A has 30GB at $35, lasting 30 days. Plan B offers 70GB at$55, usable in 30 days but with 20GB leftover.

Assessing monthly costs

If Plan A depletes in 17 days, you'll need 1.76 plans monthly, totaling $61.60. Now I’m comparing this to annual assessments to pinpoint the most economical option.

Figuring out costs

If Plan A is used for equivalent 45GB monthly, the cost is $1.17 per GB. Calculating expenses for a 365-day year involves adding up monthly costs.

Assessing monthly needs

The user likely consumes 1.5 to 1.76 plans monthly, costing $52.50 to$61.60, equating to approximately 45 to 52.8 GB of data.

Evaluating data plans

OK, let’s see. Plan B, priced at $55 for 70GB, effectively provides 50GB per month, resulting in a cost of$1.10 per GB.

Analyzing cost-effectiveness

OK, let’s see. Plan B is cheaper at $1.10 per GB for 50GB usage. However, if only 30GB is needed, Plan A at$1.17 per GB is more cost-effective.

Evaluating plan dynamics

Taking a closer look, Plan B is more cost-effective at 50GB usage. The breakeven point, where costs align, varies depending on month-to-month data usage needs.

Crunching the numbers

To find the breakeven point where the cost per GB equals $1.83, I’m equating the cost structure ($35*(x/30)) with Plan B's effective cost ($55/x).

Thought about data plan cost efficiency لمدة 25 ثانية

Let's compare the two options on a “cost per month” or “cost per GB used” basis. The key is to figure out roughly how many GB you actually use each month and see which plan costs less for that usage.

Plan A (30 GB, $35, 30 days)

You mentioned you normally finish 30 GB in about 17–20 days. Let’s assume a typical month is 30 days:

1. If you finish 30 GB in 20 days

   • You’d need $\tfrac{30 \text{ days}}{20 \text{ days/plan}} \approx 1.5$ plans per month.
   • Monthly cost: 1.5 \times \35 = $52.50 $.
   • Total data per month: $1.5 \times 30 \text{ GB} = 45 \text{ GB}.$
   • Effective cost per GB: \52.50 / 45 \text{ GB} \approx $1.17$ per GB used.

2. If you finish 30 GB in 17 days

   • You’d need $\tfrac{30 \text{ days}}{17 \text{ days/plan}} \approx 1.76$ plans per month.
   • Monthly cost: 1.76 \times \35 \approx $61.60. $
   • Total data per month: $1.76 \times 30 \text{ GB} \approx 52.8 \text{ GB}.$
   • Effective cost per GB: \61.60 / 52.8 \text{ GB} \approx $1.17 per GB (similarly around \1.16–$1.18).

So effectively, Plan A costs around $1.16–$1.18 per GB in practice, once you buy enough to last the month.

Plan B (70 GB, $55, 30 days)

You mentioned:

• You used about 50 GB, and you still had 20 GB left over (which you “wasted” by downloading random stuff at the end because it was going to expire).

So effectively, you’re paying $55 and actually consuming ~50 GB.

• Cost per GB actually used: \55 / 50 \text{ GB} = $1.10$ per GB.

If you do this every month:

• You’d spend $55 × 12 = $660 per year.
• You’d get 70 GB × 12 = 840 GB allocated per year, although you only use about 600 GB (50 GB × 12).

Which one is cheaper overall?

1. If you regularly use ~50 GB/month

   • Plan A (30 GB plan) would require you to buy roughly 1.66 times each month (because 50 GB ÷ 30 GB ≈ 1.66).
     • That would cost about $35 × 1.66 ≈ $58/month, or $696/year.
   • Plan B is $55/month, or $660/year.

   In that scenario, Plan B ends up being cheaper per month (about $55 vs. $58) and cheaper annually ($660 vs. $696).

2. If you only use ~30 GB/month

   • Plan A would cost just $35/month (since one pack is enough).
   • Plan B is $55/month, which is clearly more expensive for 30 GB usage.

In your specific case, you said you used about 50 GB (since you had 20 GB left over from 70 GB). That’s above 30 GB—so you’d have to buy more than one 30 GB pack if you stuck to Plan A. Consequently, for 50 GB/month usage, Plan B is more economical.

Bottom line

• If you consistently need ~50 GB/month, Plan B (70 GB for $55) is cheaper on a per-GB-used basis.
• If you only needed ~30 GB/month, Plan A (30 GB for $35) would be cheaper.

Since you’re actually using around 50 GB and not just 30 GB, Plan B is the more economical choice throughout the year despite having leftover data.