BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

\(\dfrac{(49\cdot 18)+(24\cdot 84)-(56\cdot 9)}{21} = \)

Expert replies
by Vincen » Tue Nov 02, 2021 3:50 am

Timer

00:00

Answers

A

B

C

D

E

Stats

Difficulty

\(\dfrac{(49\cdot 18)+(24\cdot 84)-(56\cdot 9)}{21} = \)

A. 1.14
B. 11.4
C. 114
D. 1,140
E. 11,400

Answer: C

Source: Princeton Review
Join the discussion
Source: — Problem Solving |

Notice that the answer choices are
factors of 10 of each other, suggesting that ballpark estimates will yield a safe guess.

So, 49*18 becomes 50*20= 1000
24*84 becomes 25*100 =2500
56*9 becomes 50*10=500
21 becomes 20

Substituting:
(1000+2500-500)/20
= 3000/20 = 150

The closest answer is C,114
Join the discussion