en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

Sara went to lunch with her friend. Sara's lunch cost 12.50 but she wants to leave a 20% tip. What is the total cost after tip?

Solution

S a r a w e n t t o l u n c h w i t h h er f r i e n d . S a r a^{'} s l u n c h cos t 12.50 b u t s h e w an t s t o l e a v e a 20% t i p . Wha t i s t h e t o t a l cos t a f t er t i p ?

Solution

Amount after tip : 15

Solution steps

Translate the problem into an equation:

x = 12.5 + 0.2 \cdot 12.5

x = 12.5 + 0.2 \cdot 12.5 : x = 15

Amount after tip : 15

Popular Examples

Emma invested 19,000 in an account paying an interest rate of 4.2% compounded continuously. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach 40,000?13 is 50% of what number Between which two consecutive integers doessqrt(150)One number is 23 of another number. The sum of the two numbers is 20. Find the two numbers.largest square number that divides exactly into 4