Solve: y + 20% of y = 18 - Vidyadip

Question

Solve: y + 20% of y = 18

✓

Answer

$\begin{aligned} & y+20 \% \text { of } y=18 \\ & \Rightarrow y+\frac{20}{100} \times y=18 \\ & \Rightarrow \frac{100 y+20 y}{100}=18 \\ & \Rightarrow 100 y+20 y=18 \times 100 \\ & \Rightarrow 100 y+20 y=1800 \\ & \Rightarrow 120 y=1800 \\ & \Rightarrow y=\frac{1800}{120}=15 \\ & \therefore y=15\end{aligned}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[3 marks sum]" from Simple Linear Equations (Including Word Problems)→Simple Linear Equations (Including Word Problems) — all question types→MATHS STD 7 question papers→ICSE Board STD 7 question papers→ICSE Board question paper generator→

Similar questions

Check whether the following quantities form a proportion or not?
0.4, 0.5, 2.9 and 3.5

The interest on a sum of money at the end of $2 \frac{1}{2}$ years is $\frac{4}{5}$ of the sum. What is the rate per cent?

If interest on Rs. 200 be Rs. 25 in a certain time, what will be the interest on Rs 750 for the same time?

If two supplementary angles are in the ratio 2 : 7, find them.

A die is rolled 150 times and the outcomes are noted which are tabulated as shown below :

Outcome	1	2	3	4	5	6
Frequency	29	17	24	19	33	28

When a die is rolled at random, find the probability of getting a :
(i) 1
(ii) 4
(iii) 5

Evaluate: -8 – {- 6 (9 – 11) + 18 ÷ -3}

Construct a ∆ABC such that:
CB = 6.5 cm, CA = 4.2 cm and BA = 51 cm

Evaluate : $\frac{5}{6}-\frac{7}{8}$

Evaluate : $2+\frac{-3}{4}$

Construct a ∆ PQR such that :
PQ = 6 cm, ∠Q = 60° and ∠P = 45°. Measure ∠R.