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Let expense = 500 , savings = 300 & income = 800 So new expense = 500+ 18% of 500 = 500 + 90 = 590 & new income = 800 + 15% of 800 = 800 +120 = 920 So new savings = 920 – 590 = 330 ∴ Required % increase in savings= (330 – 300 ) /300× 100 = 30 /300×100% = 10%
If D and E are the mid points of AB and AC respectively of ∆ ABC, then the ratio of the areas of ADE and BCED is ?
A bag contains notes of Rs.10, Rs.20, and Rs.50 in the ratio of 1:3:5. If the total value of money in the bag is Rs.1920, find the number of Rs.20 notes.
The simplest form of the ratio of 2.5 : 6.5 is _____.